Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ad12bcbb08aee6…

MALICIOUS

PDF

91.9 KB Created: 2021-07-15 18:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: aa950552e92454d7fe0741b284974b40 SHA-1: ac16fbb1a74f8753d473bac585bb60b706497384 SHA-256: 93ad12bcbb08aee61295cfa7b36285832316fbd8338d9fac34ba385477bf0055
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised websites and disposable hosting, suggesting a link farm designed to distribute malicious content or facilitate phishing. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to call a phone number, a common tactic in tech support scams or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/ac420ee9efbb0b03ed6e26410e973736/32020889354.pdf In PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/250ae2188a78949673156400a3288685/17631662472.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16088801a7b2a4---punabojadam.pdfIn PDF document text
    • http://cupta.org/userfiles/files/20210629211059.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/xavunujizupibomaravol.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/e1d459eba3b534a5f3e57286cff7df56/13057014888.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/9183c791c0028dea6d4d5cfd22567115/panena.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/somanufufexubevuvusa.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf3ff93618---tejovedamapetesimo.pdfIn PDF document text
    • http://teleinwestor.com/userfiles/file/lejememeguv.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16087b5a4bd115---50423619810.pdfIn PDF document text
    • http://aktifbant.com/resimler/files/36996041608.pdfIn PDF document text
    • http://bienchidan.org/uploads/files/31620784957.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a287d0952---fuzugegabelunuf.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/45006441722.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/a4c0a55eddbbc12a2ed84a65f3e0ad8a/rabujimado.pdfIn PDF document text
    • http://hani-bee.com/userfiles/files/kigovorejeretewu.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/929mv0uv49dic6mig76llkttnb/vusitegorekazu.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a64f674a9---bidexutuwabawekigoxek.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/c9272d28edbc8cfbf9b212c15cdf16e7/93963304481.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/sinowuwusisagowi.pdfIn PDF document text
    • http://www.zaluziemalina.cz/userfiles/file/lagezukolopuwajitikuvowu.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9dc1c8c3f1---bojiwutotoj.pdfIn PDF document text
    • http://eraucheta.ru/uploads/file/lujesewaxuxuko.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/d9fd8c297e16897a6ff31bfe1f6aea46/57878689858.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=service+charge+on+shared+ownershipPDF 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_off0001047d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1047D 17052 bytes
SHA-256: 7e41e509846ec1a77b1df7f5057e6e8637e14b8fbde4b1377cbee9be7a70fe79
font_01_sfnt_off00013110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13110 10876 bytes
SHA-256: a7cb720fe142a534216b880b29a37d3cf8fc2a14ad1b8c90525f61ef7d03fb86
font_02_sfnt_off000149fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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