Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a69497378ce045…

MALICIOUS

PDF

29.3 KB Created: 2020-08-23 10:19:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3c0e086e7e431a3eb7affba452bec2 SHA-1: 4dc01768bb29c4be65487aea4c3e745c15461e21 SHA-256: e1a69497378ce045546cfcb2ae2d454cd5d7c705891b2d9f67d15ecd04999e3d
140 Risk Score

Malware Insights

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

The PDF file is identified as an image-only lure, typical of phishing campaigns. It contains a critical link to a known malicious redirector, ttraff.ru, which is likely used to funnel victims to a malicious site. The document also hosts a large number of external PDF links, suggesting it's part of a link farm operation. No scripts were extracted, but the primary attack vector is the malicious redirector.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 29 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=queen+bed+sheet+sets+canada
    • http://lajin.otticacastelli.com/uploads/1/3/2/6/132696398/sotuxebu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1087/2728/files/defensa_siciliana_najdorf.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/poulan_pro_weed_eater.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/lelaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/7537/0136/files/zewupifezusevoreda.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/10399755850.pdf
    • https://cdn.shopify.com/s/files/1/0436/8603/5621/files/57106654911.pdf
    • https://cdn.shopify.com/s/files/1/0432/6929/2188/files/93589742650.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2922/files/66468735982.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/4854803309.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/xenabanozekonilakiwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2119/5688/files/lulejojiwobuxuzaxidexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/rarozibevosadele.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/lonely_planet_egypt_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_off00004034.bin
a00bf8b1ee2b132a04f8102b18a3df084d7a641cf3bca924c5ee17be635a8b44
pdf-font-stream PDF embedded font (sfnt) at offset 0x4034 5100 bytes
font_01_sfnt_off0000517d.bin
afb3f9b81b94a1cdbab90341c86927e79fb4a2de03c05d71e5e0ba275f5e353d
pdf-font-stream PDF embedded font (sfnt) at offset 0x517D 6820 bytes