Malicious PDF — malware analysis report

Static analysis result for SHA-256 febe97bef5254d71…

MALICIOUS

PDF

66.8 KB Created: 2021-02-16 13:48:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 361cfd93b637fde4c13f700599226da8 SHA-1: 75b8ab014eb72e04887c6d219aef48ce167ce383 SHA-256: febe97bef5254d71f4f593679f183c0a12ad1cbb71f8713eed18a69c9c928522
166 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and appear to be part of a link farm, suggesting a phishing or malware distribution scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scans. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jottigo.ru/wix?keyword=studio+one+3+professional+crack+windows PDF link annotation
    • http://dkmz2.club/bomb_defusal_moviev0xj9.pdfIn PDF document text
    • http://seluluxafej.22web.org/dross_crossword_puzzle_answers.pdfIn PDF document text
    • http://pelobana.66ghz.com/facebook_lite_mod_weed_modificado_apk.pdfIn PDF document text
    • http://itwomen.space/ciri_telur_ascaris_lumbricoides7pr6r.pdfIn PDF document text
    • http://erogan24.website/car_parts_finder_app74wp2.pdfIn PDF document text
    • http://zarabatyivat.ru/xoxigasasaf29gqw.pdfIn PDF document text
    • http://zagafen.iblogger.org/179034357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476782/normal_5fc757a38d4f2.pdfIn PDF document text
    • http://0fruit.space/dinosaurs_vs_aliens_filmavpva.pdfIn PDF document text
    • http://vekvelo.ru/75675284598wqv9c.pdfIn PDF document text
    • http://storeeu.info/tulovexawesutiwevidjfeky.pdfIn PDF document text
    • http://bitawulam.iblogger.org/30866493178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_6018c66ccb7a4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xubibufopude.epizy.com/26852043827.pdfIn PDF document text
    • http://wuwedutukuw.epizy.com/52239705973.pdfIn PDF document text
    • http://jibovofafef.epizy.com/naruto_shippuden_movie_list_free.pdfIn PDF document text
    • http://raxusitusumulag.rf.gd/i_am_the_lorax_meme_template.pdfIn PDF document text
    • http://jawuguv.epizy.com/75_common_interview_questions_and_answers.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_off0000c8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8BF 5572 bytes
SHA-256: 2566fb327996bd8eaadbc0dcb24065d2479aba93bda6befd1935d53574bed92e
font_01_sfnt_off0000dbdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDB 9992 bytes
SHA-256: f4ce6e72fdca470f28db91876762fb0b1e6b6ac233de9685774a103bbd7c1788

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