Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f4eae01abdcd25…

MALICIOUS

PDF

94.6 KB Created: 2021-07-25 18:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9cc28f1ce6351bbe6f8d9e2e91807830 SHA-1: 15098bd26d07dae54482aa190f7957f2bc8cd329 SHA-256: 07f4eae01abdcd25a9403b4d1ef3cc648a978dd4bd1fbf9725d0e894ece6cce6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a link farm pointing to multiple domains, many of which host PDF files, suggesting an attempt to distribute malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade gateway security scanning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9726

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://art-lamps-rali.eu/files/file/34486068372.pdf In PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/kujamixoxujiji.pdfIn PDF document text
    • http://camonetinternational.com/files/file/muzoxo.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/zixiliwiruze.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160cf4ff33e167---36992235458.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a033f87bacd---74402549779.pdfIn PDF document text
    • http://www.look4job.gr/images/_user_na/file/52443696225.pdfIn PDF document text
    • http://ligonfamilyreunion.org/clients/9/9a/9a44987365eba454cd9b2deda39aa7c0/File/69349429071.pdfIn PDF document text
    • http://mindentudor.hu/userfiles/file/xajemaga.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ada7e8ce8be---66565154779.pdfIn PDF document text
    • https://benchmarktransitions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ba89b9480---jadewekano.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/678cd5a01fae477b955db71a9e0406e0/dolilokuxit.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/acb12b582b15013628b61b0bfa591ba3/bedixofuva.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609094a844e54---dajiwogujanot.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0e14e581b---xebiwinibijotogux.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/sufematunifixiv.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/18753159426.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3f90c4c01---53256254880.pdfIn PDF document text
    • https://roweryelectra.pl/app/webroot/uploads/file/16219941015712.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160b0808f00a0d---xajafakukojok.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607b847003fc1---89601764484.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/zikojeri.pdfIn PDF document text
    • https://pacantioquia.org/aym_image/files/jokigukolokixuputif.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/357cf03d2443fdf7254f51a250666e29/jidumafepokipor.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/xopesobimadovokobuwake.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/60f0frnrvoq9dismai0tcpqsk9/59560134180.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=cook+up+a+storm+movie+free+download+in+englishPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 18004 bytes
SHA-256: 7977483d376fa789c0b6d16322362c1e635c2cd66c894c05eaabc4ba6d973e52
font_01_sfnt_off00012e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E71 2508 bytes
SHA-256: beb941330c8cae117124d447cd0fd76e12e59342cfb7bcbe8c4257661eb5c2fb
font_02_sfnt_off00013948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13948 11320 bytes
SHA-256: 3331c52e5f7ed07d86cabed8a67191ec29fdfa010aa7a20058d7ffadf8a50089
font_03_sfnt_off000153a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153A1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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