Malicious PDF — malware analysis report

Static analysis result for SHA-256 97d113dea6656ca7…

MALICIOUS

PDF

88.7 KB Created: 2021-02-27 20:01:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8d214d9b287d8e0943b4ff233af7a226 SHA-1: 95dd92fa96c3deff582e5e2df997f3a9b3e0a364 SHA-256: 97d113dea6656ca77d9b7444c8e559ff31f2a4eb427348ee4bd53b5a39dc9289
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it is a link farm and a phishing lure, specifically mentioning fake invoices or payment requests. The embedded URL `https://seumenha.ru/wb?keyword=how%20much%20does%20deltek%20vantagepoint%20cost` suggests a pretext for the user to click, likely leading to a malicious site. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing campaigns that may leverage embedded JavaScript for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/wb?keyword=how%20much%20does%20deltek%20vantagepoint%20cost PDF link annotation
    • https://fatomomome.weebly.com/uploads/1/3/1/6/131606630/vunosunodoxegigopix.pdfIn PDF document text
    • https://tigelulipuneve.weebly.com/uploads/1/3/4/7/134746657/0d8ac9872a.pdfIn PDF document text
    • https://fobuxowomi.weebly.com/uploads/1/3/4/2/134235628/2636956.pdfIn PDF document text
    • https://telidububiz.weebly.com/uploads/1/3/1/4/131452987/6720523.pdfIn PDF document text
    • http://stavki.link/tawedebo3wktt.pdfIn PDF document text
    • http://libralab.digital/nukezojuz5zi4.pdfIn PDF document text
    • https://cdn.sqhk.co/dusivubeleza/cxgcfe7/detisanujofolavu.pdfIn PDF document text
    • http://momentshop.space/jurilivigitati5cwky.pdfIn PDF document text
    • https://sobolone.weebly.com/uploads/1/3/0/7/130775045/tipuwojifuru.pdfIn PDF document text
    • https://pejegenipejixe.weebly.com/uploads/1/3/4/8/134848799/gededutuwito-telenupiko-kabipijitajob.pdfIn PDF document text
    • https://cdn.sqhk.co/zowonefaso/4jehiU2/rink_hockey_app_login.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447914/normal_601d684527dab.pdfIn PDF document text
    • https://tubozabuzimez.weebly.com/uploads/1/3/4/8/134878922/6708746.pdfIn PDF document text
    • https://cdn.sqhk.co/vuveleni/nhgWnic/yandex_translate_api_pricing.pdfIn PDF document text
    • https://tosofeguwus.weebly.com/uploads/1/3/4/3/134321705/4503910.pdfIn PDF document text
    • http://galoomer.online/870138983949ikkk.pdfIn PDF document text
    • https://xitupiwe.weebly.com/uploads/1/3/4/4/134489196/0d86bff604c1eb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://soxalisaxofaba.epizy.com/age_of_empires_2_for_android.pdfIn PDF document text
    • http://leneter.rf.gd/wevafetosijuxudevawed.pdfIn PDF document text
    • http://juludix.epizy.com/88011125488.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://scripts.sil.org/OFLIn 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_off0001074c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1074C 5568 bytes
SHA-256: 89f11f98026cae97bb4248e529bc0a0ad64e998e772c81cde44338afc0f0cfce
font_01_sfnt_off00011a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A30 11052 bytes
SHA-256: 682f9b82adef56d598d435ebdde580d9ce51fe5f9a35b73822f1c0ad093d5a68
font_02_sfnt_off00013ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FF5 16144 bytes
SHA-256: 764fe263e68fd20aff2bbd96e69f5a400d440299d02096befa162391f913c7cf