Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfd30dd5e17255b…

MALICIOUS

PDF

82.3 KB Created: 2021-09-19 08:56:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b307621f4498a02d345beef08f2ae5cb SHA-1: 7e110b4268ac236b1a3ed5d3476b65a4221aea18 SHA-256: bcfd30dd5e17255baab4cb7a1cb14b41e8212c0c3236b3cbe766cc0066091d7b
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and contains a callback lure, prompting users to contact a phone number for issues like billing or refunds. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious sites or engage them in a social engineering scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://smartvoicecom.com/userfiles/sikozori.pdf In PDF document text
    • https://keralahappyjourney.com/ckfinder/userfiles/files/zigilavulipanisagimovivon.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/ladatixulojuwegek.pdfIn PDF document text
    • https://mygoaltv.com/ipp/images/uploads/files/34692248362.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1614658d6c2ebc---mewakubeniwevezugejon.pdfIn PDF document text
    • https://fontaine-eva.fr/userfiles/files/xivowovizu.pdfIn PDF document text
    • https://campermagazine.tv/public/file/61005008901.pdfIn PDF document text
    • http://shahgrp.com/uploads/4202389446.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/26051763977.pdfIn PDF document text
    • http://eugensa.lt/app/webroot/uploads/userfiles/files/devanumelaloxu.pdfIn PDF document text
    • http://phannhan.vn/files/usersfiles/files/vogezapigidaxesuvekeko.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/5f8a0fda55de0bc47c4c02dbf8570cb0/vokigi.pdfIn PDF document text
    • http://kxqcgs.net/filespath/files/20210913054428.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16139eb12cb15c---sevaperexotedisawupe.pdfIn PDF document text
    • http://projecthouse.bg/uploads/CKfinder/files/vopij.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f0d06df047---bilimi.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/18441f866ba3bb6d0bd95f34abac2586/tijinix.pdfIn PDF document text
    • https://bunexim.dascalita.ro/app/webroot/files/userfiles/files/34479037263.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ef744053ac---musopetejapatuxu.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135252a74079---muzusutefugaji.pdfIn PDF document text
    • http://heimundsicherheit.de/userfiles/file/89213989051.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/dnjnhlaanls1vns97efa9flkrb/vufovaludimisizolofa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=update+miui+pocophone+f1PDF 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_off0000d9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BD 18960 bytes
SHA-256: 8652caa3eca4f372a9a7bb70074984b73fb8d0993d336896321a47d0908db5f5
font_02_sfnt_off0001236c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1236C 10728 bytes
SHA-256: e0d4b537b81ecba55e3541c3b2eb5eeff7adf9121227a56f0d657e7dedef3ccd

Open this report in the interactive analyzer, or submit your own file for analysis.