Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ed46608d559c780…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 12:13:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e6164ead78d14a192e05633541730ae5 SHA-1: 7a3f11067b71d693a2f2f0605aac3b3ee64d2daf SHA-256: 2ed46608d559c78093b01728c83823785f4ccbc66ace3e426862c4a5b9f52a03
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable domains and exhibiting link farm characteristics, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/strik?utm_term=garmin+rino+110+handheld+walkie+talkie+gps+radio PDF link annotation
    • http://italysummer.fun/abiude_lavar_roupa0svrl.pdfIn PDF document text
    • https://cdn.sqhk.co/bozadukopufu/65jihgW/how_to_update_software_on_lg_tv.pdfIn PDF document text
    • http://slamelina.website/xevijufolixidupananilijkfu5c.pdfIn PDF document text
    • http://trenolgia.buzz/17844151685j5kqm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5ff0f743c633b.pdfIn PDF document text
    • http://idealica-official.website/romosaweg7iiq3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/how_much_does_it_cost_to_replace_a_lg_tv_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/wipuvurusapegifenanuzor.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/32660025861.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/69457529293.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_off0000cade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADE 5752 bytes
SHA-256: 58f7d1ea5ca7a16c7ad04346aa6d360354c14b2c5feb0b6ead39dc163cecbbf4
font_01_sfnt_off0000de64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE64 10952 bytes
SHA-256: 0a4e1f0a9aeb834cf41da78253c7ca9f43d5e9f16cea65784245a5154d07da21

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