Malicious PDF — malware analysis report

Static analysis result for SHA-256 484e499420500ab4…

MALICIOUS

PDF

66.4 KB Created: 2020-11-21 20:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d352fb012d6398cdb910149ff37f1ae SHA-1: 9091287c976a44d30010bea66ff0b127957cbe04 SHA-256: 484e499420500ab41ac834f1b0d32407d86d451bc0ca87d086eb2cc8f4ea6ea8
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The 'SE_CALLBACK_LURE' heuristic indicates the document attempts to trick the user into calling a phone number, a common tactic in phishing and tech-support scams. The presence of external URIs and a link farm on disposable hosting further supports a malicious intent, likely to deliver a secondary payload or redirect to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffking.ru/123?utm_term=altec+lansing+mini+life+jacket+2+manual
    • https://cdn-cms.f-static.net/uploads/4375690/normal_5f936fc1421a6.pdf
    • https://mafukizagodixep.weebly.com/uploads/1/3/4/5/134525221/3700447.pdf
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f99c0f670b07.pdf
    • https://bujibapi.weebly.com/uploads/1/3/4/3/134383234/875adb4.pdf
    • https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/vibekufi_neziga_wukiwe_gifidulasipeveb.pdf
    • https://taxikifa.weebly.com/uploads/1/3/4/4/134496463/bebaposu.pdf
    • https://melesosinipedo.weebly.com/uploads/1/3/4/4/134475371/7566361.pdf
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/9979808.pdf
    • https://wobafedufuj.weebly.com/uploads/1/3/4/0/134012960/c5968ba35e8ff69.pdf
    • https://cdn-cms.f-static.net/uploads/4375541/normal_5f8f04b0e7b2f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/teximikamukubo/62662325035.pdf
    • https://s3.amazonaws.com/bejideba/jetibi.pdf
    • https://s3.amazonaws.com/pusumowi/nevekajirujolobamiz.pdf
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7eb.bin
38e2e24ac1895022dc49ce2f1cc0fea7877090b10a50995ace44507ce8e4c966		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EB 5368 bytes
font_01_sfnt_off0000da2f.bin
85e7ea505c1f7ef2c0b7449044f4c226ef74d75faff2ac76e8c127d2dc05b23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA2F 10244 bytes

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