Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68073b3abc92450…

MALICIOUS

PDF

49.6 KB Created: 2021-01-06 07:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 649c32b2baeb963b870ed9a11dacc3ba SHA-1: c7ac51184ea8852e478e86633f62465b7f19b6d7 SHA-256: d68073b3abc924507a0671ea317d95e8d809b460da19989ddc832be2aa6a32f2
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous external links, including one pointing to 'trafffe.ru', and a heuristic identified a mass of external PDF links, suggesting an attempt to manipulate search engine results or redirect users to potentially harmful content. No scripts were extracted, but the presence of multiple external URLs indicates a likely phishing or content-serving malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8283

Heuristics 4

  • 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 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
  • 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://trafffe.ru/aws?utm_term=song+atmosphere+of+faith PDF link annotation
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/e79b24546.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/wipoxiwadu-kapitogis-vunen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5fe6deaf539d9.pdfIn PDF document text
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/jerafojolagenipag.pdfIn PDF document text
    • https://mukaxonalox.weebly.com/uploads/1/3/4/5/134580963/316078.pdfIn PDF document text
    • https://nurirekesuvakip.weebly.com/uploads/1/3/4/4/134404885/dezonexuxu_bisowe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413969/normal_5fe35c0a01ba8.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/726f08fe-4aa3-4ddd-a78e-7020248c43f3/gafazajog.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/40968716488.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/employee_absenteeism_project_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11788e50-df26-4de3-a92c-a031275e510c/mupovupewozebowusivaniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3cdcb6d-c8e0-4d69-a87c-fbf1bfe4be69/natuxapeterewos.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/14752115203.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/56516622039.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/wisulatikuxat.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB301 5388 bytes
SHA-256: d37a51446115b0344a7b70dc298fc48096663159012c411dbf49d9543a9d9893

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