Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e3d924b6c100433…

MALICIOUS

PDF

41.7 KB Created: 2020-08-03 16:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 459d7c22fb9ddee58de324e48557ea2d SHA-1: a14a2c87e9509a07aaa13862e6ad1730c895c55d SHA-256: 8e3d924b6c1004334f6d243301bb2c78368637f81aebe593e4adb6ead1bc0acf
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, which is the primary attack vector. The document body, though heavily obfuscated, contains the URL that leads to this redirector. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to distribute the malicious content.

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=beginners+gym+workout+plan+pdf
    • http://files.churchofbeethoven-oakpark.com/uploads/1/3/1/8/131856877/xitapusabeno.pdf
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdf
    • http://files.designtimegnc.com/uploads/1/3/0/8/130874026/4512394.pdf
    • http://files.artsandwellnessofedenton.com/uploads/1/3/1/4/131437878/d92408.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/26095759732.pdf
    • https://cdn.shopify.com/s/files/1/0435/5512/7459/files/daytona_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/bopuwenafiru.pdf
    • https://cdn.shopify.com/s/files/1/0431/7455/9893/files/kamixel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8565/files/womezemakirunisesini.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/guitar_pro_6_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/9108428378.pdf
    • https://cdn.shopify.com/s/files/1/0430/0154/4863/files/57394062903.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/fedotinasomitibib.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/cummins_ism_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/rihanna_stay_download.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_off00006406.bin
0c5be0c451043d10583352f15fc5083924b88809585e842e88c850f8604884a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6406 5668 bytes
font_01_sfnt_off00007761.bin
0a068e2b7e94adc5574b9fdb2194f35551beaa2e4075ee997a08ec7fea4ade30		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 10100 bytes

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