Malicious PDF — malware analysis report

Static analysis result for SHA-256 601499c67ae7ac4d…

MALICIOUS

PDF

70.9 KB Created: 2021-03-07 01:12:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1a5154402ec0a74e940023bc72eadcb8 SHA-1: 1d86b77a7478019defbee897d4e26f298d14f384 SHA-256: 601499c67ae7ac4deee3091c962453e44596f589f421c297ca5f2ed1d1a15a3c
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/wix?keyword=1974+ap+physics+c+multiple+choice+answers PDF link annotation
    • http://1xbet-registr.site/lebowagesadopuruzopepibyoxrt.pdfIn PDF document text
    • https://cdn.sqhk.co/pawanipol/50jb6ie/jetaudio_hd_music_player_plus_v10._3._1.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/fhhjjrw/hammer_nail_gun_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450427/normal_5ff58bb7c6a83.pdfIn PDF document text
    • http://instasale.company/photosync_transfer_and_backup_photos_videosszzal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453334/normal_5ff1ea7cd7805.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizufofuj/iaA7Bhg/53715092063.pdfIn PDF document text
    • http://get3creditscores.info/49879567566tnean.pdfIn PDF document text
    • https://wiraxupafetob.weebly.com/uploads/1/3/2/6/132696263/sigagodixaxew.pdfIn PDF document text
    • https://cdn.sqhk.co/lojegalivo/NHfomjd/jaxewozejifenite.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500674/normal_5fe8c9df9df99.pdfIn PDF document text
    • https://roxomutina.weebly.com/uploads/1/3/4/6/134663133/vixerasogememivexeka.pdfIn PDF document text
    • https://cdn.sqhk.co/lekabewoz/jhApgg0/62533150615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469837/normal_6020f918a67ac.pdfIn PDF document text
    • https://cdn.sqhk.co/rojotuwo/Khhihgc/26580269999.pdfIn PDF document text
    • https://fufarolobol.weebly.com/uploads/1/3/4/5/134597676/9301201.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/tamobalasu/mekowipalokunoregotuxaf.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/suposofunezu.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/parabody_ex350_replacement_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/best_toshiba_remote_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/latedapipajibexodalafod.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_off0000d530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD530 5648 bytes
SHA-256: 078ea14fed50c720fe29072ac6819c85a529286d05f7a26a4dbb6bb99edd845b
font_01_sfnt_off0000e861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE861 10592 bytes
SHA-256: 8641286a341012fa24b1f2be50d3295a4e81ae1aed80f7ecc4bb883c785e120a

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