Malicious PDF — malware analysis report

Static analysis result for SHA-256 9762aebf20a76e4c…

MALICIOUS

PDF

81.4 KB Created: 2021-02-22 06:17:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 905ec29b3387c9d013c257dd50027da1 SHA-1: 132ccd7f7d074da6ee3ffbcb5b257c53aba47f71 SHA-256: 9762aebf20a76e4ccd5ba232344a9ea61f970e3278f6a74ec123dd1927241a3d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=why+is+my+nikon+coolpix+b500+not+turning+on PDF link annotation
    • https://cdn.sqhk.co/vopofuxo/iajfShf/1246814592.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/b6dd1a1341fb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375356/normal_60041f7a5222a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409992/normal_5fcbe5ab1dd54.pdfIn PDF document text
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/4531444.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/jhccOhh/hockey_goalie_mask_design_ideas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482636/normal_6026924a3fe4b.pdfIn PDF document text
    • https://cdn.sqhk.co/sabumijobude/bc8Z5gf/legendary_muscle_car_races_away_and_loses_wheel.pdfIn PDF document text
    • https://nitaluba.weebly.com/uploads/1/3/4/3/134348735/rakonevonubot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427498/normal_5fd6572cb02bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451542/normal_5fe6b23728810.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389576/normal_602764ef60599.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_6011726316bbb.pdfIn PDF document text
    • https://gavufiwi.weebly.com/uploads/1/3/0/7/130775220/5920045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460228/normal_5fe893c68ed09.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/big_ideas_math_answer_key_algebra_1.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/76367129797.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/94778453184.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_off0000fef0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF0 5792 bytes
SHA-256: 62d881ae18ba097f3e6844ef4614f92c59b4414c163d10cfdcebe2ac4610c97f
font_01_sfnt_off0001129b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129B 11424 bytes
SHA-256: b462284989654545459b4ba9b25b86877b2e536b7dd8fddb86929cd03f4300d0

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