Malicious PDF — malware analysis report

Static analysis result for SHA-256 886c62ab97964273…

MALICIOUS

PDF

58.0 KB Created: 2020-11-22 05:08:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 30eadade7a820b74849030041b8fb2eb SHA-1: d79f03848086f10254c0d42c327c6ab26ef564a6 SHA-256: 886c62ab9796427328b3de865194e0aeb0a6c8478e30fdc5413a79c3ad30b521
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/aws?utm_term=banda+singh+bahadur+full+movie++free PDF link annotation
    • https://pakedarisibibo.weebly.com/uploads/1/3/4/5/134501134/3360831.pdfIn PDF document text
    • https://rimenedefogifu.weebly.com/uploads/1/3/4/4/134466040/nupikupumuvi.pdfIn PDF document text
    • https://gagumosesixibo.weebly.com/uploads/1/3/4/0/134018544/mujememubasekojipe.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/vozetovuxukelul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388274/normal_5fafb9786e6c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_5f94df960783c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416932/normal_5fa7094a8097b.pdfIn PDF document text
    • https://kevuwegifutawed.weebly.com/uploads/1/3/4/7/134746568/5793319.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413842/normal_5f94180dafb58.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/198608b7-9ce1-4a80-93a2-c1880ba75c58/javixozivojedozodoruva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ade5cbf-b4a1-420b-8f8a-35cc2b66c5f1/ratiduxusevedoras.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d36fe5d1-5c0a-4e54-9c0b-ab1f3a9b0c8a/93395544852.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_off0000a961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA961 5568 bytes
SHA-256: 201d1104b6fb311c3d524342c04484f0164104795651c1709328906e621d0bdc
font_01_sfnt_off0000bc2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC2F 9116 bytes
SHA-256: 856f98fae1fcdc025a1895d7ea62400b0036edbc7681a937558b1ebcb7e0d531