Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11d8726424da381…

MALICIOUS

PDF

80.5 KB Created: 2021-02-20 21:05:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5dd99ecc6b04330cc91031630bc02a7 SHA-1: f9db5328a8728cfc4ffd903cb15f65235fc50041 SHA-256: e11d8726424da381007fba5df08aa7cba73523c53ae4e222496f00997cc9dfd8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=newburyport+rockport+line+train+schedule PDF link annotation
    • https://cdn.sqhk.co/fuwasokeg/aUhhiha/evowars_io_mod_apk_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/hAhaqxR/wavovomirutarinokerorox.pdfIn PDF document text
    • https://birirewenojitu.weebly.com/uploads/1/3/0/8/130813362/35fa57b21c420ce.pdfIn PDF document text
    • https://silepokow.weebly.com/uploads/1/3/4/3/134366863/65663c1.pdfIn PDF document text
    • https://cdn.sqhk.co/dameseri/fsCKPOu/91690878656.pdfIn PDF document text
    • http://jotijitod.66ghz.com/benedasoxasufojunabipa.pdfIn PDF document text
    • http://rikaseligexodiz.22web.org/15321864379.pdfIn PDF document text
    • https://cdn.sqhk.co/xezafube/jMFihpA/26369648929.pdfIn PDF document text
    • https://nulumekut.weebly.com/uploads/1/3/4/3/134373747/13ee94.pdfIn PDF document text
    • https://cdn.sqhk.co/derebeduno/4ligQKW/pro_action_driver_training.pdfIn PDF document text
    • http://gofimowekes.66ghz.com/rf_spectrum_analyser_software_free.pdfIn PDF document text
    • https://vilegewadaw.weebly.com/uploads/1/3/5/3/135324537/wutowuz.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/punagilelabon/antony_gormley_sculptures_formby.pdfIn PDF document text
    • http://saxogif.epizy.com/igneous_rocks_lesson_2_answers.pdfIn PDF document text
    • http://zegemipufe.epizy.com/video_er_linkedin.pdfIn PDF document text
    • http://kolenexe.epizy.com/pewalipojan.pdfIn PDF document text
    • http://rawuvotatu.rf.gd/hey_you_app.pdfIn PDF document text
    • http://vamudijikepefos.rf.gd/super_smash_inkling_guide.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_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 5528 bytes
SHA-256: 985a392e6fc62a330ae43a1ba39c85cf218c7c8827eb465a5da672032a1f2ff4
font_01_sfnt_off000105fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FC 15116 bytes
SHA-256: 3e2f79a0d090825351bb9e1e47ff7b141dbd9dd5bc141907357bc6e67843087d

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