Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7838254360e880…

MALICIOUS

PDF

38.5 KB Created: 2020-08-03 08:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 423f3472b2c1c9796f2399bec1a46bc5 SHA-1: 341d69ac47e3fd25a0ddae4ae2d45d4ec809468b SHA-256: 9a7838254360e880d1c46567b18186ae4d19b5e7464ce6c5ff93c362acc0fe30
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised as a reloading manual. The document body also contains obfuscated text and URLs, further supporting the malicious intent. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute 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.ru/pify?keyword=sierra+5th+edition+reloading+manual+pdf
    • http://files.lifebuilderstc.com/uploads/1/3/0/7/130775245/lagiralejago-likuf.pdf
    • http://files.trumpsgreatamericafacts.com/uploads/1/3/0/7/130738806/rivuzu-jopipaj-jetutejexer.pdf
    • http://files.thestylishgardener.com/uploads/1/3/1/3/131398475/fb22edda69.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/luwasiful.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/6160798823.pdf
    • https://cdn.shopify.com/s/files/1/0436/5982/1209/files/86785029893.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/wiwezer.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/xejupadimumesigevugebiti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdf
    • https://cdn.shopify.com/s/files/1/0433/4691/9579/files/98602945004.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/51328156564.pdf
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/fuse_on_93_ls400_location.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdf
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/fozivoxavupirafetodovefi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0647/files/55138856458.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/34247287810.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1164/files/549906331.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_off00005663.bin
06cf5f966b4dd51122f5efe330be739f7d871bdc2883c44a792bd2d060c067c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5663 5504 bytes
font_01_sfnt_off000068f0.bin
9972f511c00ca17f5284e05fb5b7dd26494cde9bd6abb92e12e8ba3a74093717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F0 10628 bytes

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