Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dccf67902d26ca…

MALICIOUS

PDF

91.1 KB Created: 2021-06-28 02:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f8c066faee8bb5b235959ed4b7f0f310 SHA-1: f698332bf105a10aa2f7ee12719b4a37416e5cb0 SHA-256: e0dccf67902d26ca87c3763418afe61aed2ccfe7bd7a090267d4478c5ddf8c4b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document body is unreadable, but heuristics indicate it functions as a link farm and a callback lure, prompting users to call a number for issues like billing or fraud. Several URLs point to compromised WordPress sites hosting PDF files, suggesting a distribution mechanism for this phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/0o4o706hlnfj2mn6rbk6j3dbgh/81878438219.pdf
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608890b26db37---wofotizowitidofem.pdf
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/v8kuddbs5du1iifqr3ggkquujk/rurorusovi.pdf
    • https://nhorizontours.com/userfiles/files/nalini.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d272c74638---96974221717.pdf
    • http://canxetaidientu.com/images/file/47497199483.pdf
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/6uquqv6jhhvosg76jfcamjd426/50901629655.pdf
    • https://postele-z-masivu.sk/ckfinder/userfiles/files/puwubapozivuxagepedejewa.pdf
    • http://alituncer.com/userfiles/file/28649113897.pdf
    • http://aiswaryamatrimonials.com/fck_uploads/file/dodifenuxefato.pdf
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072ca6541827---44760189070.pdf
    • http://casier-a-bouteilles.fr/file/23824042565.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/398e839b7854cac08ddf0b6eb767f6d7/tikozos.pdf
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/mb54jout0t43fra66oo3rgbpk0/80369366192.pdf
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b49692cbea---xokelinogot.pdf
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d10a560515fc9dce207c95be1e2a0f24/39486914509.pdf
    • http://thedewakohchang.com/image/upload/File/akuzurigefelemowudojugu.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c864904765b---ledezekoxuzulinavevidavo.pdf
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca3e83739f---53487877632.pdf
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608e26fa81ac2---95890925837.pdf
    • http://www.publicitymailing.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160acc46a87349---goliwetazepiminerinol.pdf
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/81e53b2eca2e3184e521ff0dee3424d8/futemobifumidenanom.pdf
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/c63f5bc9d5ab3b30b9e4c8a73e4d9bad/92304509384.pdf
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/aalu37aspoc2a7phcf6ju71efq/wepito.pdf
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/d66a492561b8d238ee02bb8b14c0005e/27163553088.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=npa+meaning+in+banking
    • https://rb.gy/n0eshr
    • 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_off0001024a.bin
acea2573b8be826068f4acdf2cee0a1921f44f4be465e71bee556641388be72d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1024A 17696 bytes
font_01_sfnt_off00013081.bin
563177fefcff7fdf083fdc73aa934f6cde0642e7fb09f2fea60e0916d5c4cd2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x13081 10272 bytes
font_02_sfnt_off0001475a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1475A 16792 bytes