Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d34f159491d907e…

MALICIOUS

PDF

71.2 KB Created: 2021-01-16 19:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fc02c5ecbf10ecdbb9e071a4967f9fc9 SHA-1: 74dab1ff233525fd5d7a68b9dbb265d4df9ea0b1 SHA-256: 5d34f159491d907e1cffc531912cb6c32b2e04b0e9c8cbc1ae924560aab2d363
234 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to reference a "Golden patriot scooter manual", likely a lure to entice users to click the malicious link. The presence of numerous external PDF links suggests a link farm or redirection strategy, aiming to obscure the ultimate destination and potentially deliver a phishing or malware payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://traffmen.ru/123?utm_term=golden+patriot+scooter+manual In PDF document text
    • https://kutusavirub.weebly.com/uploads/1/3/4/2/134265758/riponuvivad.pdfIn PDF document text
    • https://site-1231318.mozfiles.com/files/1231318/fun_easy_brain_teasers_with_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449781/normal_5fb60e079f73a.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxudopusot/ieSnzgf/khloe_kardashian_net_worth_2019_forbes.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/Vhggejg/liar_s_dice_movie_cast.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mazugezijap/821393577.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/ee_voicemail_settings_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/teacher_s_guide_science_7_unit_2.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/xekafo.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/pichuva_kathi_full_movie.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA53 5132 bytes
SHA-256: f1749bdbc5c160d8d057af9be1e2fb380ce97884c58dc6efe25748aab3c60479
font_01_sfnt_off0000dbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAD 11344 bytes
SHA-256: f36ca90c23566346bb45e0acc2a8f374067b7b93fc9f30dbbf850fe362709861
font_02_sfnt_off0001023c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023C 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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