Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef7ddc232a8537c…

MALICIOUS

PDF

46.6 KB Created: 2020-08-02 10:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e61a1b0bc7abf50b919350c3ba52914 SHA-1: 6ae98fe99e3d7bb0f923d04a0d82398a6ce66f00 SHA-256: 3ef7ddc232a8537cb76528b6e0d20aa8675252cb19a31115723a9ed56a7a6ab3
152 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded URLs. One URL, https://ttraff.ru/pify?keyword=the+magician%2527+s+land+pdf, is identified as a known malicious redirector. The document also exhibits characteristics of a PDF link farm, with many links pointing to Shopify domains, likely as a tactic to obscure the malicious intent. No scripts were extracted, but the primary attack vector appears to be social engineering through malicious links.

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.ru/pify?keyword=the+magician%2527+s+land+pdf
    • http://files.forgetmenotsmovie.com/uploads/1/3/0/7/130775840/gimewov.pdf
    • http://files.wildwellnessllc.com/uploads/1/3/0/7/130776682/xutesoxilebaz_mosadupop_jelokivusefi.pdf
    • http://files.themakerexpo.com/uploads/1/3/1/4/131407369/wunovakejid.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/95352671140.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/stock_traders_almanac.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/john_deere_265_parts.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/motub.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7063/files/vuteruwovidomativepotewin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/3872918083.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8182/files/rajoxezavozobogul.pdf
    • https://cdn.shopify.com/s/files/1/0440/9583/2216/files/fanawimoliruwupos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/79694220052.pdf
    • https://cdn.shopify.com/s/files/1/0433/0474/7168/files/97271202002.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/john_deere_x300_service_manual_free.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_off000079a3.bin
ad9b1437ca8bf8926ca7159cf303d10b63554da61f9fe20de4d10acb12b0d92c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A3 5456 bytes
font_01_sfnt_off00008c15.bin
2643ee3b44e1fca1f76dda61f7660693d73a9a420651b22d0e2f5dec25daf89c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C15 9684 bytes