Malicious PDF — malware analysis report

Static analysis result for SHA-256 e282e90b9436397f…

MALICIOUS

PDF

70.8 KB Created: 2021-03-06 02:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 091721ac7e443df933ff80ed15bca33e SHA-1: ce3a69324829c29e64689b2142647a3839e050c1 SHA-256: e282e90b9436397fe0cba02951d88407c5aaddf79eb1296012c8ade20bcdc018
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://botokaw.ru/123?utm_term=how+to+draw+puppy+eyes+face PDF link annotation
    • http://rm-swis-mine.com/53545060680ocgz9.pdfIn PDF document text
    • http://mybiol.site/best_free_call_blocker_app_for_android_2020dlf46.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/4qYuicI/mowijevusitegupi.pdfIn PDF document text
    • http://espaceabonnes.com/xoguxuvimowuvijazetuzevitnut0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a6132035-7465-4fe4-be4e-2faa96c22dab.filesusr.com/ugd/cf950b_a807f784447f4ec0ba8573e989d8591f.pdf?index=trueIn PDF document text
    • http://ximitexus.epizy.com/53416831600.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/rekefagisirorateb.pdfIn PDF document text
    • http://favavobebin.epizy.com/small_rotate_pages.pdfIn PDF document text
    • https://95a57b4d-a24c-4412-bd87-88f4f885d252.filesusr.com/ugd/011e4b_ba5522ca157c4912b40101fc0fcc5673.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/goneduzum/answers_in_genesis_vbs_2018_music.pdfIn PDF document text
    • https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_81dc25a1edde416b8ec0dd357e2978b0.pdf?index=trueIn PDF document text
    • https://d86ad34a-7df2-4f47-937b-a12ab5abc0fa.filesusr.com/ugd/8cbfce_cdaca679a6004b1d97ca81b78551aa4c.pdf?index=trueIn PDF document text
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_73cae10aeb524265a8c848c2e3d71bf7.pdf?index=trueIn PDF document text
    • https://8b5ac0f3-2bc4-49a6-9a99-2541af31b215.filesusr.com/ugd/f2ef67_020fc0d4e2034e8099cf54f77399b1d0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/bikarobusofezoriz.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_off0000d933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 5272 bytes
SHA-256: 6705a30fef557b4aaf2e3569da13f4b7e7d3675530f02333b12890e25ea3ba91
font_01_sfnt_off0000eb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4A 10360 bytes
SHA-256: 1ec3859b6bbc9fe8aa4261140853605b4cd7aed63e4d66c4b5be27ff1fedeff5