Malicious PDF — malware analysis report

Static analysis result for SHA-256 91b9d7d72c919e86…

MALICIOUS

PDF

71.7 KB Created: 2021-03-14 05:00:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1891c6d109d97f1ff14a5f0bff4b0060 SHA-1: b13b1d9658d0826b33f416d4399d8a703f3fa05b SHA-256: 91b9d7d72c919e86ef22c43bb64b3c3f5d540235ea7e21a8a7259283312bbb9e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded URLs and heuristic detections indicating it is a phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, contains a search query related to 'hair clippers', likely intended to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=what+is+the+best+cordless+hair+clippers PDF link annotation
    • http://kleomaften.online/lemon_cake_recipes104m8.pdfIn PDF document text
    • https://cdn.sqhk.co/pifajaloro/hclgflF/cinema_uae_dubai_mall.pdfIn PDF document text
    • http://youla-24.cc/balujurefotitapajofom0t4xn.pdfIn PDF document text
    • https://cdn.sqhk.co/vefemonuru/ibNhfha/kievan_rus_timeline.pdfIn PDF document text
    • http://idealica-italiaofficial.site/jowetaxuvatobzhyst.pdfIn PDF document text
    • https://cdn.sqhk.co/rifebonapesi/geG8efx/66316221054.pdfIn PDF document text
    • http://cosmostil.top/28083865494ujha4.pdfIn PDF document text
    • http://899themes-demo.ru/fowejivefulobameneny6ngy.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/xapijifas/vintage_cast_iron_radiators_for_sale.pdfIn PDF document text
    • http://kakasis.onlinewebshop.net/fifty_shades_of_grey_2_ost.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/60933398114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/615b27ad-dcf7-43c8-8874-1062d615b107/how_to_check_iso_certificate_validity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eda3ed14-7e35-4bde-b523-0ca2820bec65/oxidation_number_of_hgl.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/fizabexubupunivufogulozun.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_off0000d8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CD 5312 bytes
SHA-256: 840c1dcea504adf6c4a76830fa6785ac6ddfb0940e82088d77feb96d5cdecb11
font_01_sfnt_off0000ead9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD9 11392 bytes
SHA-256: a15384a4f4855604aca213263eefaf9118869c0d4b958964e5972292a8ea632f

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