Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfbb1739f8549e82…

MALICIOUS

PDF

67.6 KB Created: 2021-02-23 16:39:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 605c23295a8f1ceb9ec2808cd0d78a24 SHA-1: e7492bb7002457b18944114bc8d02bfa0d7f3666 SHA-256: bfbb1739f8549e825cf3cc2b642962d26c8f938f7fb25eeeb5764c2628e9f0ef
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://bologen.ru/wix?keyword=smoke+me+out+tour+2019+dallas PDF link annotation
    • https://xajevopo.weebly.com/uploads/1/3/2/6/132682124/tapum_wenatipem_jexiroxo.pdfIn PDF document text
    • https://buporinedo.weebly.com/uploads/1/3/4/0/134041533/2830d2af765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465908/normal_60184813e7733.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/dhfoJha/learn_to_play_piano_on_midi_keyboard.pdfIn PDF document text
    • https://cdn.sqhk.co/bibobovezave/jhRgijj/how_many_starz_power_books_are_there.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409425/normal_5fd81058c3c3c.pdfIn PDF document text
    • https://javubabajekav.weebly.com/uploads/1/3/5/9/135957287/kuwibobejitonivedibi.pdfIn PDF document text
    • https://cdn.sqhk.co/bidomutarili/dzggD7t/17976556107.pdfIn PDF document text
    • https://masudokunu.weebly.com/uploads/1/3/4/7/134731157/4339694.pdfIn PDF document text
    • https://tudexabi.weebly.com/uploads/1/3/4/7/134770635/d3708fad6a3c.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/bededuxotulapil/arjun_bottle_cap_challenge_video.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/bee_movie_game_100_save_game.pdfIn PDF document text
    • http://gefegasoro.epizy.com/meaning_canonical_form.pdfIn PDF document text
    • http://rubipupajet.rf.gd/33074313554.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/34012858337.pdfIn PDF document text
    • http://zelubosomud.rf.gd/28935994608.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_off0000cb73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB73 5620 bytes
SHA-256: 4c72c55c1cc7a7a76428b54d7361858a050c389de56957485e376d00c5873cf9
font_01_sfnt_off0000de71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE71 10140 bytes
SHA-256: 2d8eae55931d1a0f0f260d8987350a6d38784115d5ca1a8ffadc0782600fdf05