Malicious PDF — malware analysis report

Static analysis result for SHA-256 a728986980603978…

MALICIOUS

PDF

69.6 KB Created: 2020-12-03 15:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 565cbc395a56a15edb5a063afe7755f2 SHA-1: e7098eceb54fd88ebb1a97e8c55ccb3f3650a4d6 SHA-256: a72898698060397865ef4110ca8c7eb51bbdc0986f749f79c5773eb0b093ef5c
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, flagged as a link farm, with a primary malicious URL pointing to a site offering 'zitobox games free coins 2020'. This suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the distribution of a trojan.

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
  • 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.
  • 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://traffnew.ru/strik?utm_term=zitobox+games+free+coins+2020 PDF link annotation
    • https://daginunus.weebly.com/uploads/1/3/4/5/134597638/1360915.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/f6df655a19a0b84.pdfIn PDF document text
    • https://wawaxotev.weebly.com/uploads/1/3/4/3/134368025/e165fb.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/letewimanag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b38fba-25c2-47b7-ad8c-9291dca2fb4d/37488294815.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/22190730939.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc598a0085bf90c0e1d1088/t/5fc7519e93ad1a48121992c8/1606898079573/dexufukiran.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/whatsapp_animated_gif_images.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/taekwondo_black_belt_test_forms.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4a781972c46e3c94e381/1606371962073/5532542970.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/isaac_asimov_guide_to_the_bible_audiobook.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/zulebexomupezeba.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_off0000d48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48F 5608 bytes
SHA-256: 5343379b99adebd0745b6ebb506a36d0979b0f6581a5f50ec0cbebd4897cc25e
font_01_sfnt_off0000e79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79E 9896 bytes
SHA-256: df4a3301d922bb646f9fae53dc6f5b5cbb4fcfd9188ddb53f47dd2c1aaba7d7b

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