Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d20b40c6d63ccf9…

MALICIOUS

PDF

89.7 KB Created: 2021-09-01 22:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 97dc0e9a36fb84f9a578b02abf3ad9f0 SHA-1: edf818527acad37952f7f6b0d2516a865957e919 SHA-256: 0d20b40c6d63ccf9c5a7ccb8391972cfd9ab370fa4d33c467509080fd390b2a2
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged as malicious by a ML classifier and ClamAV. It contains a link farm pointing to multiple compromised WordPress sites and other disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous external links indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16072b18d22749---67124838181.pdf In PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/dafebugujox.pdfIn PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/700f03002786be0963d0963aef2b9b63/zufojemilisijuf.pdfIn PDF document text
    • http://skrn.cz/pic/file/74128460227.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/26fed58f6c8aa2b135a5e2aa6e368d5f/tujipogonubagadekidefi.pdfIn PDF document text
    • http://svx.su/ffile/file/kuwarov.pdfIn PDF document text
    • http://ticaproduce.com/ckfinder/userfiles/files/tikimimije.pdfIn PDF document text
    • http://www.poliklinika-hb.cz/userfiles/file/94557579920.pdfIn PDF document text
    • https://pt2-turbo-j3t.com/contents//files/32924515313.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/j6shsip702goh9lappugecck13/sukarom.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/21eb802d9eb62c7d5ca49ebb028a5d9d/gavekamegifagosodafeze.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/lovutijosulefuvurofo.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/e64cf1ba2eacc9d7b2db3328d1528389/72902632821.pdfIn PDF document text
    • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/kebizazapebuwowifosit.pdfIn PDF document text
    • https://danielstrehlau.com/userfiles/file/zofifiwefoz.pdfIn PDF document text
    • https://yellowstonewildlife.com/mojule.pdfIn PDF document text
    • https://thuaphatlaihanoi.net/uploads/files/53758807821.pdfIn PDF document text
    • https://tramtron.vn/uploads/files/files/10068864323.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/0d3f94e658acf01349309a5515511e49/gefifofowukidik.pdfIn PDF document text
    • https://binhruamuinanobac.com/wp-content/plugins/super-forms/uploads/php/files/rb5gpkt3klldg55jjmciiouh5k/41026265747.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/61457664969.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/vqav4m2bqm3l3sbnafeot5k5f4/74728157471.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5c0c4c820---57955963361.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=1st+puc+statistics+model+question+papers+with+answersPDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/2f6a0a2ce701ad36e10f0198f9c9ecde/fuxukuvafu.pdfIn PDF document text
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 18136 bytes
SHA-256: 3aea908be1a170e6fd4fc597a38187aebd39ea6a4a1ab3360c6ccb4a078422de
font_01_sfnt_off0001265f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E76 11068 bytes
SHA-256: bdf8bd1cde9cce37d9c1e6692d89d38890613f1f3c2b292052ca619753c0838c

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