Malicious PDF — malware analysis report

Static analysis result for SHA-256 df42e25c938d496d…

MALICIOUS

PDF

85.3 KB Created: 2021-03-20 16:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6f2941718e164b639a63c4245af34812 SHA-1: 18a3cc490774d264d89320d11e3808613288cbff SHA-256: df42e25c938d496d51d7e0c7d93ff98566eb0411c59cce49d2e91129de906305
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/strik?utm_term=what+is+the+best+diet+for+type+2+diabetes PDF link annotation
    • http://fanuvazav.scienceontheweb.net/tarunuzip.pdfIn PDF document text
    • http://madawuboso.sportsontheweb.net/medieval_2_total_war_mod_cheat_codes.pdfIn PDF document text
    • http://fegalaro.iblogger.org/tipicidade_formal_cpp.pdfIn PDF document text
    • http://nelodorofi.iblogger.org/79329137200.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c39dea-574c-40d0-b3a2-f0dcc056f1be/zibazesibozasesa.pdfIn PDF document text
    • http://woxikajir.myartsonline.com/jerumutowulunarilepuwote.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/78012480342.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34bb6d73-f145-45c6-b989-36611842490d/niv_life_application_study_bible_large_print_bonded_leather_burgundy_thumb_indexed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdaffd55-c5f5-484d-923c-a53f61b387f0/skyrim_how_to_install_mods_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/29486623285.pdfIn PDF document text
    • http://rogofideb.onlinewebshop.net/wagobijovutifesa.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/xuluvibutewuru.pdfIn PDF document text
    • http://pisonepegosa.myartsonline.com/rorugejadojapalunid.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/mufonufowedegixukexubajob.pdfIn PDF document text
    • http://nogomazarem.epizy.com/venugovozatuvagovunetod.pdfIn PDF document text
    • http://wetizizokixo.epizy.com/sonebovawurupasuwel.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/suluterekixijiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1c27cf6-81e1-4431-80db-7bc33f23af83/jonotuzevotivekiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2e6c265-bee2-424e-906d-8101b3324899/love_story_chords_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddfe720a-48dc-4749-aa73-f4e52c12538d/todubuw.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/94519429525.pdfIn PDF document text
    • http://tudixuzaw.onlinewebshop.net/why_wont_my_jeep_shift_gears.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/31904556817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bdb1b97-c325-4cb8-a049-ba9d0aa10aef/98455409545.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_off00010dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDE 5484 bytes
SHA-256: 337ae8516a49caf002ab897e44eb7c06b0952b18c1210d237140ce918426e2fe
font_01_sfnt_off0001208e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1208E 11720 bytes
SHA-256: b94ca890359629f881c380d4f9240d378fc99217cf026e5a1a090471ce6b3729

Open this report in the interactive analyzer, or submit your own file for analysis.