Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc66c76b34201d8…

MALICIOUS

PDF

69.6 KB Created: 2021-02-26 05:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 50c0f28024645c9efc6716fad3f51279 SHA-1: 0f3298216547ce0803c908a866563ed23f68be79 SHA-256: fcc66c76b34201d80b0f2d0a03d258fda0ae8c0c7044853991513b7b29609997
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, appears to be a lure related to product filters, directing users to a URL that mimics a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/award?keyword=nutone+allure+ws1+range+hood+filters PDF link annotation
    • https://koniwosusuzese.weebly.com/uploads/1/3/1/8/131856176/zoxunafisopenu.pdfIn PDF document text
    • http://stroiline74.ru/snow_slopes_australiaa0gkl.pdfIn PDF document text
    • http://gesenimul.22web.org/wijebabikovujeluw.pdfIn PDF document text
    • http://dosaxixapaxa.medianewsonline.com/91955617334.pdfIn PDF document text
    • http://bizbize-yeteriz.org/smart_bracelet_how_to_turn_on_bluetoothwnq9m.pdfIn PDF document text
    • https://vofirojaj.weebly.com/uploads/1/3/1/6/131637635/2167367.pdfIn PDF document text
    • https://wifusudufasebo.weebly.com/uploads/1/3/5/9/135992472/bc71149e22cecb.pdfIn PDF document text
    • https://zaronubiguxade.weebly.com/uploads/1/3/4/6/134685024/furiremun-monegesaroj-kinavodovugitef.pdfIn PDF document text
    • http://brandframeb.com/triade_de_cushing06068.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/fovezewi/fitter_trade_question_and_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/browser_fr_sony_android_tv.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/how_to_lose_belly_fat_indian_diet.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/fluke_t5-1000_parts.pdfIn PDF document text
    • http://notaruk.rf.gd/24250526710.pdfIn PDF document text
    • http://dufakukin.rf.gd/excuse_me_boss_notification_tone.pdfIn PDF document text
    • http://konevimojo.epizy.com/example_cv_templates_free.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_off0000d41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41A 5284 bytes
SHA-256: b183cfa9ebed9716c3939e00c90d22767f983b87c6805f7413a3f37d86c3d459
font_01_sfnt_off0000e624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE624 10264 bytes
SHA-256: 76a7dae8aa669252b3a7fb82fa4080dc4a068954782168fdfa55f464803801bb

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