Malicious PDF — malware analysis report

Static analysis result for SHA-256 8805c22f49d54465…

MALICIOUS

PDF

34.2 KB Created: 2020-11-06 21:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: c81c1991b755fbeb3dffbbdd51b0e93c SHA-1: df3c8d721719e6929e336e7bb6c7f27c028b845a SHA-256: 8805c22f49d54465cc8c60424ce5d86475c2dfab232091b6445040aef4e34495
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafffi.ru/123?keyword=tank+trouble+deathmatch+unblocked+games PDF link annotation
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/2671082.pdfIn PDF document text
    • https://bozobamawokoruv.weebly.com/uploads/1/3/4/3/134350924/5998337.pdfIn PDF document text
    • https://davavenetu.weebly.com/uploads/1/3/4/5/134500413/gekuxozetomoz_josimufufewuxo.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/1259929.pdfIn PDF document text
    • https://nabidojanafo.weebly.com/uploads/1/3/4/4/134455463/7c11bb40007c1ac.pdfIn PDF document text
    • https://godowipi.weebly.com/uploads/1/3/4/5/134520373/7390682.pdfIn PDF document text
    • https://pepisukuwen.weebly.com/uploads/1/3/1/6/131606293/ganowax-gotedi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://rupuxijod.files.wordpress.com/2020/11/vefuxag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef93ab7-4f00-4834-8121-fac1b81cb75f/how_to_get_around_breed_restrictions.pdfIn PDF document text
    • https://givolajokofe.files.wordpress.com/2020/11/japatewajaliwififu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dc848ce-bdcb-4356-8923-516d3156bbf0/64496275821.pdfIn PDF document text
    • https://nawazuled.files.wordpress.com/2020/11/pugubesaxorowofo.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.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_off00004a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3F 5504 bytes
SHA-256: cd11071e43c8ee974363fa0c2376acd84803532524e7ab1ff283a95bfb8b1fbe
font_01_sfnt_off00005cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC8 9216 bytes
SHA-256: c1cb22b0b698cffd2f1cbdd0bb7450d320b5235acd56e57a499eb9ef48e2a9c0