Malicious PDF — malware analysis report

Static analysis result for SHA-256 9245c14e9a2a4e59…

MALICIOUS

PDF

78.8 KB Created: 2021-03-02 03:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 11cfc5cc1b961805760c2010db9b37b7 SHA-1: 1d32524aad716fa677892fe2daf97461ec607e5a SHA-256: 9245c14e9a2a4e5996b2b5135b4df57a8888bc1bc3ea3450a710e924a6b1c29d
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, many of which point to disposable domains and are likely used to redirect users to malicious content or download further malware. The presence of external URIs and link farm heuristics strongly suggests a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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://nipisod.ru/123?utm_term=toyota+camry+xse+2018+engine PDF link annotation
    • http://figuxovutofid.mygamesonline.org/jezasas.pdfIn PDF document text
    • https://cdn.sqhk.co/dufubimaru/Ehgjii2/atlantis_pearls_of_the_deep_apk.pdfIn PDF document text
    • http://makipoduzoru.22web.org/48146344897.pdfIn PDF document text
    • http://remont-kholodilnikov.website/how_to_adjust_shimano_di2_shiftingo0mam.pdfIn PDF document text
    • http://fidafevemikiwe.mywebcommunity.org/summary_of_chapter_11_of_a_long_walk_to_water.pdfIn PDF document text
    • https://cdn.sqhk.co/zanivuwiduvo/dBhdjg0/picaporte_traduccion_en_ingles.pdfIn PDF document text
    • http://rubeatyshop.xyz/837464505774kl9p.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/nivewij.pdfIn PDF document text
    • http://stankoff.org/86806961185ps4ui.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/simplesmente_acontece_utorrentvfhy1.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/pijedupaxusudinujudo.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/is_super_mario_sunshine_multiplayer_on_switch.pdfIn PDF document text
    • http://xidakuxekon.22web.org/reporters_killed_today.pdfIn PDF document text
    • https://cdn.sqhk.co/numorolele/bgfmPgf/zekajoxexekewazeletonak.pdfIn PDF document text
    • http://wulutapebime.getenjoyment.net/twilight_saga_eclipse_full_movie_streaming.pdfIn PDF document text
    • http://rafupofamurawaf.mygamesonline.org/88619801727.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevesijuduma.atwebpages.com/health_and_safety_officer_salary_ontario.pdfIn PDF document text
    • http://dojopugoput.epizy.com/77923678263.pdfIn PDF document text
    • http://sewasijibakel.epizy.com/93012855808.pdfIn PDF document text
    • http://kititone.epizy.com/avesta_kitab_indir.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_off0000f6b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B9 5728 bytes
SHA-256: 4640764a05d6eec681aa957c11654d72df7a28e1dac51db70521aac7d996b0ac
font_01_sfnt_off00010a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 10512 bytes
SHA-256: e7dc0f20bdffa71763076b08a9b9ff31c8c4a6aa7ccc325d6eb039574d9b1cdd

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