Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5f7f9518880083…

MALICIOUS

PDF

73.1 KB Created: 2021-02-19 17:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 355d214e922773ed2c8a7cc06eff6d79 SHA-1: b6954dacf30db9d6dd3d27f5110b0520e4827858 SHA-256: 6e5f7f951888008302d36a23a991893e22a888f6c1f06bf575f7de271d49d510
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. The document body, though heavily obfuscated, contains references to search terms like 'Ashton Irwin girlfriend kaitlin blaisdell', suggesting a lure to a malicious website. The presence of numerous external URIs, many pointing to disposable hosting, further supports a phishing or malware distribution scheme.

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://baarspo.ru/123?utm_term=ashton+irwin+girlfriend+kaitlin+blaisdell PDF link annotation
    • https://cdn.sqhk.co/dokederajo/V8hjgeP/vested_simple_reversionary_bonus_calculation.pdfIn PDF document text
    • http://gujufifirisin.22web.org/pokemon_explorers_of_sky_evolution_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/YGCgchj/41429223919.pdfIn PDF document text
    • https://cdn.sqhk.co/woselukafo/iSsXyZ3/51568206699.pdfIn PDF document text
    • http://javebamugizal.66ghz.com/american_college_of_radiology_contrast_media_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/dhahhja/likasumagep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412761/normal_6028a605e7eed.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/fzieieu/missing_you_memes_quotes.pdfIn PDF document text
    • http://ragixanomus.iblogger.org/up_board_online_marksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473902/normal_5fda2cd37a698.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zekubegem.epizy.com/wuwisesisedewubabasawobu.pdfIn PDF document text
    • http://nodufezazu.epizy.com/mufasuwediz.pdfIn PDF document text
    • http://wubalele.rf.gd/xitabexasowavibexe.pdfIn PDF document text
    • http://bobakazof.epizy.com/tropical_depression_forming_in_gulf_of_mexico.pdfIn PDF document text
    • http://zotuxegusam.epizy.com/honeywell_home_thermostat_manual.pdfIn PDF document text
    • http://muxofitum.rf.gd/valedictory_speech_template.pdfIn PDF document text
    • http://wometopususap.rf.gd/41283830790.pdfIn PDF document text
    • http://zelekisiwamab.rf.gd/my_autograph_telugu_video_songs.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BF 5452 bytes
SHA-256: a86c3e6fbb130c3e649df67118a0e234fd0c78541fb40406a6b92c718e5fcad8
font_01_sfnt_off0000f357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF357 10560 bytes
SHA-256: 8b7ec6c05b4543fa3c074b2b10f9eab37b92a4cfa850a58c4c7286ed01433ed4

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