Malicious PDF — malware analysis report

Static analysis result for SHA-256 c952d567f3742166…

MALICIOUS

PDF

80.6 KB Created: 2021-02-17 13:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 43831e1c0b579e8503f58917cbdbe8a8 SHA-1: 522a4fa3ac29b73aa4fa1bb174f63c915f5520a6 SHA-256: c952d567f3742166e78aa477be60b225f1dcaaaedbc83a0b4383a4561627b586
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://seumenha.ru/123?utm_term=exerpeutic+folding+bike+manual PDF link annotation
    • https://cdn.sqhk.co/sativomofij/TFjdCDs/best_wardrobe_sliding_door_system.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369769/normal_6007c2a49e535.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451757/normal_5ff7c3bda66dc.pdfIn PDF document text
    • http://scarcebook.com/roresiwowelivomekogq4594.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445531/normal_6008a02800221.pdfIn PDF document text
    • http://womenita.fun/dragon_city_how_to_get_legendary_dragonxhh5h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449779/normal_5fcf66ee6e5b8.pdfIn PDF document text
    • http://mumiwimag.iblogger.org/chum_chum_chanana_baje_song.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/bufexa/npav_antivirus_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/69904752600.pdfIn PDF document text
    • http://zorogeloma.epizy.com/pusesezomagikoxezudoxizer.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/baillie_gifford_diversified_growth_fund_annual_report.pdfIn PDF document text
    • http://vawutalakomu.epizy.com/31611390202.pdfIn PDF document text
    • http://gijawiravutul.epizy.com/asus_transformer_book_t100ta_drivers_windows_8.pdfIn PDF document text
    • http://kexeban.rf.gd/14195658205.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_off0000ff97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF97 5528 bytes
SHA-256: 462f3b8fcd953f743ec0e7fe1e15272990b9ea0170b909d30e6e223010e104e3
font_01_sfnt_off00011252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11252 10332 bytes
SHA-256: b4f0b32d4edeb1d7ac14de29bebf6a6ecb6b3c65b15028d98cbdf335e9ee8a89