Malicious PDF — malware analysis report

Static analysis result for SHA-256 066447ba28da0b80…

MALICIOUS

PDF

77.4 KB Created: 2020-10-27 07:33:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 278227f840c44e8549b8361e2344cdb5 SHA-1: d622e38f1b832957522174997daf81649197686f SHA-256: 066447ba28da0b8054a9ff6068587bb2a19ece28df6e49a7d1aeb9be096b845b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is disguised as a Frigidaire electric range manual. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The PDF also contains a large number of external links, indicative of a link farm, further supporting the malicious intent.

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/123?keyword=frigidaire+electric+range+manual
    • https://nimukitu.weebly.com/uploads/1/3/4/2/134266418/110688.pdf
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/kuxugop_pirevigipin_roluv.pdf
    • https://rokumetusemep.weebly.com/uploads/1/3/4/3/134382705/a81a52ef885.pdf
    • https://juzukixidud.weebly.com/uploads/1/3/4/4/134453884/xakepaxiwewazapi.pdf
    • https://rikisuluwujufa.weebly.com/uploads/1/3/1/4/131452938/fuzejanitip.pdf
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/zeluromaxokejataxek.pdf
    • https://xaranetudu.weebly.com/uploads/1/3/4/0/134016810/vorifo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4bbc8e6c-5ed3-49e1-97d5-d14f19e267a6/41950517281.pdf
    • https://uploads.strikinglycdn.com/files/be914c97-db08-4e9e-81d7-271f5aa0ac7d/technologie_6C3A8me_C3A9nergie_evaluation.pdf
    • https://uploads.strikinglycdn.com/files/24aaea24-b4f5-4610-8364-161180e1364b/12180154960.pdf
    • https://uploads.strikinglycdn.com/files/2c8b95ce-b7c2-408b-afbe-2c6ad4b7a8b9/burgundian_inheritance_event_id.pdf
    • https://cdn.shopify.com/s/files/1/0436/4563/2665/files/gozetomupomuwamowew.pdf
    • https://uploads.strikinglycdn.com/files/aeb1c15e-1434-48f5-ab3b-1560cfa8d6d2/sugukogalap.pdf
    • https://uploads.strikinglycdn.com/files/8f8585bc-ef6e-454f-898a-f04b271e62cd/89545515221.pdf
    • https://s3.amazonaws.com/gupuso/fernando_pessoa_poems_in_english.pdf
    • https://s3.amazonaws.com/putelekireza/gate_exam_brochure_2020.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a2.bin
675e14427a2c8b8f07ca96f521454c23b4de74777773b563e3df509211d3b660		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A2 5036 bytes
font_01_sfnt_off000101a1.bin
84c29c6588a98c04900cd969510c42add521e5fea8e0b646aebed9780753bbf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101A1 11268 bytes

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