Malicious PDF — malware analysis report

Static analysis result for SHA-256 56425466f22470d7…

MALICIOUS

PDF

41.0 KB Created: 2020-11-02 22:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ae57b06561c79d08ee0dc47be927f0f SHA-1: 12a4d5d220d7dbc00d7e891c926ad932706715d9 SHA-256: 56425466f22470d79cd1b1f41929bbc079f12f044be0909b713de681f8efe4c4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary redirector URL, 'https://ggtraff.ru/aws?keyword=blade+guides+for+snow+plow', is flagged as malicious. This suggests an attempt to lure users to external, untrusted resources, likely for further exploitation or phishing.

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/aws?keyword=blade+guides+for+snow+plow
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5f95806fe317d.pdf
    • https://cdn-cms.f-static.net/uploads/4412775/normal_5f9b6cd4ca164.pdf
    • https://cdn-cms.f-static.net/uploads/4367308/normal_5f889efb91dff.pdf
    • https://cdn-cms.f-static.net/uploads/4419818/normal_5f9c84e445962.pdf
    • https://pagogaxuzogujo.weebly.com/uploads/1/3/3/9/133997845/913190.pdf
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/womubog.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4d279ddf-ecfb-4549-95f0-c7bcf98826be/duweluxuxusisaju.pdf
    • https://cdn.shopify.com/s/files/1/0483/9499/3816/files/fortress_interlocks_lok_manual.pdf
    • https://uploads.strikinglycdn.com/files/3a7f1251-530a-4891-921d-1c589d720726/58965545930.pdf
    • https://uploads.strikinglycdn.com/files/ea63380e-847b-4b81-a635-28f20c2929a3/the_natural_soap_book_free.pdf
    • https://uploads.strikinglycdn.com/files/67e30921-d192-422d-93ed-9939358758ac/devasonatud.pdf
    • https://uploads.strikinglycdn.com/files/3cede9f5-e798-4b39-9b5a-c58660cb3475/batman_arkham_knight_guide_downl.pdf
    • https://uploads.strikinglycdn.com/files/115623a4-84f6-4548-afed-17ad2d45908a/xufelisebaj.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_off00006274.bin
407b418b7ad6e61d42a03a7e9c958aabe184b032b9c72c675a331c8266858fc5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6274 5348 bytes
font_01_sfnt_off000074cb.bin
2950721a4f91f1c930cdfe34d7360031cc4e8d1259946306d3755ccc2f97cd3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x74CB 10104 bytes