Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32f3e554d7a0429…

MALICIOUS

PDF

58.6 KB Created: 2020-12-04 23:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d4d3eb6484165c368182e6b6067fb71 SHA-1: e22ba93b578fb543a7910f26cc452cfcee97bda6 SHA-256: a32f3e554d7a0429cbddc70ecc8c00300d9e41cf82517578692d7f63d6f830b2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for a phishing trojan. The PDF contains a large number of external links, many of which point to suspicious domains, suggesting a link farm or phishing attempt. The primary malicious activity appears to be directing users to external, potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9503

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?utm_term=cdc+immunization+guidelines+splenectomy
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f98d58f4f4cd.pdf
    • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/kajarejerikubusi.pdf
    • https://wilexezixokesu.weebly.com/uploads/1/3/4/7/134764798/cadfc572564.pdf
    • https://makonajarozov.weebly.com/uploads/1/3/4/3/134341931/f69c33182.pdf
    • https://birebojutadavom.weebly.com/uploads/1/3/4/3/134342015/45d268d9.pdf
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f8742aec2d55.pdf
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/9208696.pdf
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/6934293.pdf
    • https://cdn-cms.f-static.net/uploads/4383128/normal_5fa4da32043f8.pdf
    • https://cdn-cms.f-static.net/uploads/4376874/normal_5f8c109acd4ec.pdf
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5fa200a8353ad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc0d4c78139af037644e8c4/t/5fc20dcefa04221c7166c412/1606553039137/not_my_forte_meaning_in_english.pdf
    • https://s3.amazonaws.com/nagev/vasikudirumuwonimig.pdf
    • https://s3.amazonaws.com/wegemebufojafak/chalte_chalte_full_movie_sabwap_com.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db2c.bin
c86b5de07efe2599cc918032aed386b9c98dbd0edbd6d2719af29d5de36808a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2C 5352 bytes

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