Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec44403882d24c9…

MALICIOUS

PDF

44.1 KB Created: 2020-08-01 15:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d19850c4301661c779fa0409ee6aa7f SHA-1: 4a11b2b564a8a814041c13c7d1ee90b9d6b53d5a SHA-256: 3ec44403882d24c9758bc2a1dc847c70145af6569368240a66f40326e8a5f4f7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a social engineering attempt to trick the user into clicking the link. The presence of numerous other links to Shopify domains, while individually benign, contributes to a link farm pattern, likely for SEO manipulation or to host further malicious content.

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://ttraff.cc/pify?keyword=blood+angels+8th+edition+pdf
    • http://files.lifelybali.com/uploads/1/3/1/3/131381374/jojunutavid-vupojezatoma-jekorujifetuv-dakiko.pdf
    • http://files.centralpopalicious.com/uploads/1/3/1/4/131453432/sobisodokojud-xekubukugo.pdf
    • http://files.theuilanifund.org/uploads/1/3/0/8/130814050/dorugapobod.pdf
    • http://files.tangonegrofilm.com/uploads/1/3/1/3/131384171/8480264.pdf
    • http://files.drawinginchurch.com/uploads/1/3/1/8/131871558/1419966.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/43408388699.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jatebilebasa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.pdf
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/96665267259.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/soparuvuridove.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/8997/files/kadexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4237/3785/files/naminijuli.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0549/files/53908854152.pdf
    • https://cdn.shopify.com/s/files/1/0428/0900/0103/files/jopuwamonuwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/jufakexolanulidav.pdf
    • https://cdn.shopify.com/s/files/1/0440/8875/4328/files/89447549891.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e2a.bin
e0fda3c87e708c475d496d55424243cc65263c991ff5f82ad89744dcd72f248b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2A 5448 bytes
font_01_sfnt_off000080b5.bin
e88815e8c19f17a5bb35b7d899db5df03e1447cad1f5d2afcc71b9b85401a696
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 10052 bytes