Malicious PDF — malware analysis report

Static analysis result for SHA-256 965cf18415c434ed…

MALICIOUS

PDF

48.2 KB Created: 2020-11-02 22:09:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 85b50e29042f1bf1ac904827bf3d67ce SHA-1: 9879a3300a43be17c3ead03496fde6d98847e398 SHA-256: 965cf18415c434ed66846c98377aebb1d49fa33809c00d1a75b2a06ed6ff3c1e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and a known malicious redirector. The ML classifier strongly indicates maliciousness, and the link farm behavior suggests an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://gettraff.ru/aws?keyword=the+intuitionist+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4404959/normal_5f9dfc02c4f13.pdfIn PDF document text
    • https://vabeliguteziji.weebly.com/uploads/1/3/1/3/131379360/a3f407.pdfIn PDF document text
    • https://waxovidimised.weebly.com/uploads/1/3/4/4/134446407/5e7c458.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/lositevavox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f92fcbad5a89.pdfIn PDF document text
    • https://sonujesenusa.weebly.com/uploads/1/3/4/3/134344018/c96867e22a.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390052/normal_5f97cc36374c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385647/normal_5f8f42fc1eed6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_5f922647d4e57.pdfIn PDF document text
    • https://vinibakuru.weebly.com/uploads/1/3/4/3/134310820/resesevifegagur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406228/normal_5f9b43cfbaea7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383565/normal_5f9968bc1d7c3.pdfIn PDF document text
    • https://rexolofozex.weebly.com/uploads/1/3/4/3/134368018/2700289.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/mikukinib.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://cdn.shopify.com/s/files/1/0434/1907/4722/files/ping_pong_table_dimensions_in_cm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2994/5239/files/vsco_cam_apk_iphone.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_off0000702f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x702F 4624 bytes
SHA-256: 0a274b09505ecea059f07a07c79de2378055ff1b8196a4e109f977e0a4c8822d
font_01_sfnt_off00007fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE5 11080 bytes
SHA-256: bad260b1d9a3db8c5397ccf80bc76e8a9f87febb6f54b04a135f756a28dccaeb
font_02_sfnt_off0000a54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA54F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.