Malicious PDF — malware analysis report

Static analysis result for SHA-256 7110cd690a69ab90…

MALICIOUS

PDF

70.0 KB Created: 2020-12-22 03:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: db4290c5c51cf9f64dc96d1f1da52b85 SHA-1: efedd7f151a229f072b9518e78414e4094be9fd2 SHA-256: 7110cd690a69ab90d2aef6fad84b94e246017fb36d7dc932a80ed087169fbab3
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains strings related to 'Aladdin 4d software free', suggesting a potential lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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.
  • 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://cctraff.ru/aws?utm_term=aladdin+4d+software+free In PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/7460934.pdfIn PDF document text
    • https://sogovowezop.weebly.com/uploads/1/3/4/3/134324678/zavifexidurijew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f93c4bb28056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5f8ddfe481901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376369/normal_5f90c9a32c3fb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/diferencie_as_reformas_luterana_calvinista_e_anglicana.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/aditya_birla_mutual_fund_fact_sheet_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf60924f98375720d80a9d/1606377619595/naregenizatuvugowuzep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a206bda9c57a97de70c0/t/5fd21342880fa23343dac9f5/1607603011085/judanoxixoruzeximebetare.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/58345687212.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/report_on_downfall_of_nokia.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/bauerfeind_genutrain_knee_support_review.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ebffabffab30daa8de6c/t/5fd75de03ebe0416317dcde4/1607949793808/sherlock_abominable_bride_sub_indo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5dced0b6b03258f575f14/t/5fcbcbda6fd93023bc0e941d/1607191514732/43587720501.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CA 5072 bytes
SHA-256: 71ccb03c28195d9c5a8193b9cc35d7022d2c4ded5fd4098b1d328639206e7822
font_01_sfnt_off0000e630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE630 10812 bytes
SHA-256: b87cc583feefbdb81e73bc40027c550fac42c10bcdd8d166e4cb4a9b4582efe2

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