Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23109f494ca343b…

MALICIOUS

PDF

42.0 KB Created: 2020-10-28 23:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5487314b9cddaa4c1b7e3fd50ac1054b SHA-1: 2c76a4c6fc6fe8ef6d459c3812ba01bb5af8d2a7 SHA-256: e23109f494ca343b87c48b545dfe47f4e53b8fd938144dd5154e707fbb3a69e8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a link farm designed to appear as search results, directing users to a malicious redirector. The primary malicious URL identified is https://ggtraff.ru/strik?keyword=used+appliance+parts+columbus+ohio. The document's structure and embedded links suggest an attempt to exploit SEO techniques for malicious redirection, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=used+appliance+parts+columbus+ohio In PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/0c94b9059ed2.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/sosaninuf-fodivo-darafo.pdfIn PDF document text
    • https://kelabuwak.weebly.com/uploads/1/3/4/0/134098394/6481657.pdfIn PDF document text
    • https://guxesawaxogego.weebly.com/uploads/1/3/4/3/134314991/3943772.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/edbadba.pdfIn PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/31b843eebd7d3.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/dexenov-lorupuzixa.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/bisute/14691715353.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/breaker_box_label_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d41efd-5c2d-4c46-8987-9c3cde376cd0/40360761951.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/vejaxojupimudobaxomefux.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/wings_of_fire_book_12.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b7d03d-40c8-405d-8c8c-5a2fdc58850c/xedasu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf56ec50-42c1-467b-9c08-b910eb024523/sejabaripujumez.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/10780799184.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/28266118139.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/32611685885.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/kivuworizi.pdfIn PDF document text
    • https://s3.amazonaws.com/nonipesikiri/unity_reorderable_list_documentation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d67a904c-462e-473b-b8e5-39f91c9801fc/5790710240.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_off000064a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A1 5444 bytes
SHA-256: 8124d8e97db06ced779dd6c01a95c6a333490b8c819f478b06cee9543447e879
font_01_sfnt_off000076f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76F0 10460 bytes
SHA-256: 3b22e7a1c12c655943beebd601775140d42d0aa6a14d2a71067586a1d2014f14

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