Malicious PDF — malware analysis report

Static analysis result for SHA-256 a60af5ed64f58a67…

MALICIOUS

PDF

66.7 KB Created: 2021-02-15 09:10:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: de9ba06abdf6bfb840ea06c76b7175f7 SHA-1: 9ed9d4f3f74fc29da7fe6c373da8688de72ae873 SHA-256: a60af5ed64f58a67f55948a730534874a958e34e17d6da4a400cc2a3219b1e34
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. One prominent URL, 'https://bologen.ru/wix?keyword=unblocked+76+games', suggests a lure to a gaming-related website. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via the linked content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • 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://bologen.ru/wix?keyword=unblocked+76+games PDF link annotation
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/2947993.pdfIn PDF document text
    • https://diriremipujuna.weebly.com/uploads/1/3/4/2/134265666/2231169.pdfIn PDF document text
    • https://pinabufibofux.weebly.com/uploads/1/3/2/6/132682338/remaluberubanif-leboxur-vigej.pdfIn PDF document text
    • https://zojunakalej.weebly.com/uploads/1/3/2/6/132682915/samavezotevud.pdfIn PDF document text
    • https://lijokojojet.weebly.com/uploads/1/3/5/3/135333606/levoxuxesuzete.pdfIn PDF document text
    • https://tetunabirudav.weebly.com/uploads/1/3/0/8/130874278/vajaxatolesiri.pdfIn PDF document text
    • https://pifelitasa.weebly.com/uploads/1/3/5/3/135350032/lilusurelepi.pdfIn PDF document text
    • https://rizapomon.weebly.com/uploads/1/3/0/7/130739727/86887.pdfIn PDF document text
    • https://belijexulifowa.weebly.com/uploads/1/3/0/7/130738738/losaxozud.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/simujix/82155061016.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/ecological_footprint_wwf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/misupodosesa.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/free_wifi_calling_app_for_android_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/types_of_coliform_bacteria_in_drinking_water.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/52518826422.pdfIn PDF document text
    • http://sovewegupafipiw.rf.gd/nepogunonadirepizaxejejag.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/56868891017.pdfIn PDF document text
    • http://zeralibogol.epizy.com/29057104331.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/automated_drain_gutter_cleaner_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/catnapper_power_lift_chair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/free_reading_comprehension_worksheets_for_esl_students.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/fakejebekanuliro.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/acdsee_2019_ultimate.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_off0000c7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F7 5592 bytes
SHA-256: fbed31bc194ac6d23d3aac3a03a66dd245cd3b89290f374c0a9362da3fa76609
font_01_sfnt_off0000daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 10084 bytes
SHA-256: db735794cb06567770ff7ddeedecb77a92cd00d1dddd21ddab5283d0e8dea0ff

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