Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39b5aa3961e9d13…

MALICIOUS

PDF

38.9 KB Created: 2020-08-09 03:40:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89e53a7d9d70a89a59d4ea8612b954bf SHA-1: 280e2bce0ad68944b64830278e2a5b9fe031d851 SHA-256: e39b5aa3961e9d13d81ea259d219f6a28b19c49a4773880d246bae832f85c409
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though partially corrupted, contains text related to a "Bikini body guide workout exercise and training plan pdf", suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely used to obscure the malicious redirector.

Heuristics 3

  • 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.
  • 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=bikini+body+guide+workout+exercise+and+training+plan+pdf
    • http://files.acubyang.com/uploads/1/3/2/6/132681882/nubijetatepere.pdf
    • http://files.en.lflplatform.net/uploads/1/3/1/4/131405951/fukugetazujed.pdf
    • http://gomatalok.tampa2stroke.com/uploads/1/3/0/7/130740178/bunofutivok_dukojalome_kabaliga.pdf
    • http://files.dariusyoga.com/uploads/1/3/1/4/131455475/wimarapuxafa_foxeb_nuxowi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4016/9366/files/befakejonob.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/75314681204.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/88975447138.pdf
    • https://cdn.shopify.com/s/files/1/0433/9659/5870/files/29120892987.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/94499227562.pdf
    • https://cdn.shopify.com/s/files/1/0437/0864/5541/files/xekamokaxupak.pdf
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/78626936922.pdf
    • https://cdn.shopify.com/s/files/1/0435/5755/2277/files/nuwave_oven_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/xaguvopekarelixem.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/dejitonadinugukavira.pdf
    • https://cdn.shopify.com/s/files/1/0431/8304/6813/files/fanolijosuzovaza.pdf
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/yasuko_kawamura_face_lift_normal.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/87737751034.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_off0000571f.bin
0018b541d0f5d3c0b68ab42ac455bf0c6cd14b6ad4d637c07331d7e2a4eee7c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571F 5840 bytes
font_01_sfnt_off00006b34.bin
5321e1e88363d2f03738f94ff0fd622f15b8f28bea6f439be1a407feb0237f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B34 10244 bytes

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