Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a1796208ae1b036…

MALICIOUS

PDF

71.0 KB Created: 2021-03-20 23:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f14ef3e84bd4ed51cecbcaf65242b91f SHA-1: 9f0290574b44cd2999fdd75f2567a772717dbdd1 SHA-256: 7a1796208ae1b036fb540eaae96fad04d65d96a301690eb1a2b07278ab3c8a14
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically targeting users searching for appliance troubleshooting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=whirlpool+cabrio+washer+troubleshooting+not+spinning PDF link annotation
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/musiwevume.pdfIn PDF document text
    • http://jakivuxevova.22web.org/97252963616.pdfIn PDF document text
    • https://sufunisukexe.weebly.com/uploads/1/3/1/3/131381546/wogupegaweros-repikusolalili.pdfIn PDF document text
    • https://cdn.sqhk.co/rubogomuweme/e2ibhgy/phasmophobia_ghost_sounds_download.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/ihfkjeD/77143751225.pdfIn PDF document text
    • https://filojekejo.weebly.com/uploads/1/3/4/4/134446685/7d07573.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/iejfif9/pafilu.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/fcJGWze/hangouts_video_call_iphone.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/xufujofaleki/kufukuno.pdfIn PDF document text
    • http://fizijumopib.rf.gd/twilight_saga_eclipse_full_movie_free_download_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/27601948570.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/34463780398.pdfIn PDF document text
    • http://famutiparuzot.epizy.com/baby_doll_dj_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/anderson_east_girlfriend_sheet_music.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_off0000d8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F3 5440 bytes
SHA-256: 9c128139070fa44b2cdc5f8a5bfa5ba2465bdf2d9d2453d65bf6f942c9aaedf0
font_01_sfnt_off0000eb7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7C 10460 bytes
SHA-256: 6bf97175d49632df145f65ed96d1a376c864c7b7c8e7dd22ef4a796626235a50

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