Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86b05ac30d386b8…

MALICIOUS

PDF

87.5 KB Created: 2021-07-01 22:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 19363a31ecf478519fe12d5f6c8988c4 SHA-1: 6b9da5207cc9c82622112090db41a9170d72f89a SHA-256: e86b05ac30d386b8fd79f74c6a57fd1e6379c5f0911bcf531ff72ba5f65b93ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download malware or engage in phishing. The presence of multiple links on disposable hosting and the use of UTM parameters suggest a SEO-based distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

Heuristics 6

  • 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.
  • 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://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/648223b391a09002d5487fe5af6dd797/26211426783.pdf In PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073d6ecb5950---bejuxagumu.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ae88f1a85---15106489288.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/bdn6s1ikbhjn61lnm76qq7s9r1/72278725930.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6c3541ef11---97972569035.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607febc02d4d7---nigeniwemejafilul.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160c31efb61820---47535443557.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d5a0c411a99aa91c68ba23fb29781acd/sexapenamej.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c84fd3195c---tawiketukiw.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/df759ae54d7d26d96897e0e6a56dc454/baneladagoxud.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a580a901801---dafewav.pdfIn PDF document text
    • http://yuha.be/_files/file/54924927683.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c77dba1718b---67403363499.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080623c9f44d---zopoj.pdfIn PDF document text
    • http://vizit-k.net/uploads/editor/files/tatolikodufigo.pdfIn PDF document text
    • https://stopserv.ru/files/file/69157642230.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/29572941509.pdfIn PDF document text
    • http://archi1919.com/smlclub-files/file/42694492813.pdfIn PDF document text
    • https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/ea824adb4a3317e5e58bf209e3054cff/jidasizarumabok.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/epihjs9ohb96q33saoh6fom17c/zinufe.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160afaa0d2fb8d---lizumetixuwej.pdfIn PDF document text
    • https://zzwgjx.com/d/files/kilafuwejariz.pdfIn PDF document text
    • https://asthasupermarket.com/userfiles/file/77567600953.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b21d8b1ab8f---55849263977.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=mohabbatein+2000+free+movie+download+720p+hd+movies+counterPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 18160 bytes
SHA-256: 3a4557202d8826daad5b7a0f32c7fa57cbca2f2af19434a01dbf4aa0a38e9caf
font_01_sfnt_off00011d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D02 11560 bytes
SHA-256: 4919322b6ccf4d5b358b32e5a1592a18118f8f207dd4686cc786b3475653fc5f
font_02_sfnt_off0001383b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1