Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0dcd9e69a3915c…

MALICIOUS

PDF

76.9 KB Created: 2020-12-25 09:37:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 47be4ac37fb1a32dcc26842b5db8d376 SHA-1: 37df699573fa079245577c07714a4e7816d8ffb7 SHA-256: cc0dcd9e69a3915c3a235a196af2e0080941acc802cec0ade65c1218b6ef9be7
244 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?utm_term=art+and+arcana+d%2526+d+pdf In PDF document text
    • https://cdn.sqhk.co/gemadaruvow/hagjzic/destiny_2_companion_triumphs.pdfIn PDF document text
    • https://cdn.sqhk.co/babonisu/gjLBgcn/likes_back_on_instagram_australia.pdfIn PDF document text
    • https://voruvagozi.weebly.com/uploads/1/3/4/7/134742827/4404396.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/jeMq6hh/bimivuworibub.pdfIn PDF document text
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/xamukevipemu-godepubada.pdfIn PDF document text
    • https://dowisapi.weebly.com/uploads/1/3/4/2/134266119/tunogigumive_kipikixuwabi.pdfIn PDF document text
    • https://cdn.sqhk.co/bosavoked/gdtqhf7/vmware_horizon_client_download_5._4._2.pdfIn PDF document text
    • https://kozowesojufeg.weebly.com/uploads/1/3/4/7/134717080/dazow.pdfIn PDF document text
    • https://cdn.sqhk.co/xamapetarel/hbjPjiM/12314948951.pdfIn PDF document text
    • https://nafuxiba.weebly.com/uploads/1/3/4/0/134097784/faluluduz-fekesozog-lifalogefevejin.pdfIn PDF document text
    • https://judunelikirolo.weebly.com/uploads/1/3/4/3/134375477/2406583.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/0bb033.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zerejibixupav/ej_king_ig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/824cf976-37e9-46c1-84d3-4b8de9414ab0/35647306222.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/best_address_label_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE441 4224 bytes
SHA-256: 1ea8891d360c5da547499fed3e5bc2e5befb364b0969a4d0a6e00f992cfc86cc
font_01_sfnt_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 11320 bytes
SHA-256: e095cddd4964bb0c15c60a686c8c855fab94c6b6f00be7d65d6fcf6d983e1f3f
font_02_sfnt_off0001192c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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