Malicious PDF — malware analysis report

Static analysis result for SHA-256 46030f63d3ad4ce6…

MALICIOUS

PDF

88.2 KB Created: 2021-06-29 01:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2b758bc30d71b709f3bb61f7208a6d14 SHA-1: 762683c346739ab39c1940bcc372c979e6d54b00 SHA-256: 46030f63d3ad4ce604a44fd979796c31c83fccaba24361578c45f035c55d7780
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains embedded JavaScript and numerous links pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of external URIs and link farms on potentially compromised hosting indicates a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987084df29e---bomipadewuwumuz.pdf
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb81903a76---65132273678.pdf
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/c75a5e3ab1ed5b030df6710d94c12716/61274492244.pdf
    • http://airlineclassof66reunion.com/clients/c/cb/cb51827d251551eca15067b3b23580a4/File/tukemobewenumowe.pdf
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084f93ad1073---wakutivesumir.pdf
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/aa53eae9520c974256cca8a0d8b333cb/9397029739.pdf
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ceb11000833---wedudogoxabonifoteze.pdf
    • https://alshamiltrading.com/alshamilfiles/file/demebemutezexet.pdf
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/ebqjn3rt5u15l8h7a4hf6a8hq2/pazufureruze.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d20d5c4de74---magisewetuj.pdf
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/493e6d0614022b9e773ec37999794373/zofegajuwasa.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607075a97483a---mapemufexepabefixebirulu.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/rsc9alecrcu1anf0db5s559dp0/19207330360.pdf
    • http://to-kajihan.net/js/upload/files/julazuronofanirepumaz.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/5cdace13e1ec09c637351097eaae8aa0/korobowosibetubo.pdf
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/fd16706a19530b3381888a7d49fd42e5/tumevuxema.pdf
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bdca060fe6b---kiduzitinivu.pdf
    • http://gayaarchi.com/userfiles/file/20210603055207.pdf
    • http://canphantich.net/Images_upload/files/zexajamoxavibujipo.pdf
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/e3c1b3e89ba719aa12e601eb7c89dbcf/36703579964.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+make+a+pdf+link+open+in+a+new+tab
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f36d.bin
9512b25f2826b53e5dc5f56ff776692160ae44e43ebf0ae8dedcdebcaa3cf27c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF36D 17592 bytes
font_01_sfnt_off000121d4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x121D4 16792 bytes
font_02_sfnt_off000139eb.bin
84e0c8a0939cb1c1c0141ed33edbea1be5695321223a94f322f1e0d3ae166504
pdf-font-stream PDF embedded font (sfnt) at offset 0x139EB 10700 bytes