Malicious PDF — malware analysis report

Static analysis result for SHA-256 b432e44b8135d678…

MALICIOUS

PDF

42.9 KB Created: 2020-11-06 17:33:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 6a1769637e26071a0e4a2e2af133a277 SHA-1: 42a182c3d477cd93e0c33592e53e39358c8f9529 SHA-256: b432e44b8135d67872ee8f663796b887749e08556fb687488230ee49835b61df
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://traffset.ru/123?keyword=husky+power+washers+official+site PDF link annotation
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/03d3414.pdfIn PDF document text
    • https://sukevimekixav.weebly.com/uploads/1/3/4/5/134599702/3762964.pdfIn PDF document text
    • https://gitexerepasali.weebly.com/uploads/1/3/4/5/134577484/c38718312.pdfIn PDF document text
    • https://fixasamajiwige.weebly.com/uploads/1/3/4/3/134318971/8113336.pdfIn PDF document text
    • https://fozijiruzixusap.weebly.com/uploads/1/3/4/3/134317533/vedud-maxoka-zapamova-wovabut.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/vitufimek.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/1c4d0.pdfIn PDF document text
    • https://dozasasakebo.weebly.com/uploads/1/3/1/1/131164234/6000709.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/6774791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5f9e1eedceced.pdfIn PDF document text
    • https://mitixofixomu.weebly.com/uploads/1/3/4/3/134333727/8806356.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://toranibu.files.wordpress.com/2020/11/80234717881.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/92998082591.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87928b18-246d-4e28-b69e-438bf97e26fd/teapot_dome_scandal_political_cartoon_meaning.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 5096 bytes
SHA-256: 13b1d9cfc034d8845870dc2688124a2f03d27455d268fac8d44deea08afad088
font_01_sfnt_off00006cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF0 10552 bytes
SHA-256: 86401a463a0aa804275f63473c62db739104bb8895c6d825b8a1b079cd6eb982
font_02_sfnt_off000090ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CA 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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