Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ea9cd37aa70128…

MALICIOUS

PDF

42.0 KB Created: 2020-08-20 01:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fe36ab6e99feb14ac29b00b15d10e78 SHA-1: 0c7d28642cb8e0b7eba6a42b4c8ac6b52031efb3 SHA-256: a7ea9cd37aa70128b2a26e8f3045f90498c1b20bb2baa6ef152b2000818a0c17
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 Shopify domains but are likely part of a link farm. One critical heuristic indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=cela+un+cadaver+exquisito+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=cela+un+cadaver+exquisito+pdf
    • http://files.mobotflexi.com/uploads/1/3/2/6/132682640/a62106cca.pdf
    • http://files.lemontwriters.com/uploads/1/3/0/8/130813747/898281.pdf
    • http://files.inallseriousness.com/uploads/1/3/1/6/131636792/5811377.pdf
    • http://gigowox.justneighborsvt.org/uploads/1/3/1/8/131856877/volutovagoker_wesufufakoxun_kaxoxefoju_vakel.pdf
    • https://cdn.shopify.com/s/files/1/0432/2770/9597/files/davovixabekaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/consumer_reports_laptop_computer_review.pdf
    • https://cdn.shopify.com/s/files/1/0428/7440/5020/files/48196937153.pdf
    • https://cdn.shopify.com/s/files/1/0440/3914/3574/files/zumoki.pdf
    • https://cdn.shopify.com/s/files/1/0434/2461/2508/files/76996734514.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/tafixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/46313391208.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/73743236222.pdf
    • https://cdn.shopify.com/s/files/1/0433/9338/4599/files/foweredod.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/enterprise_architect_cv.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_off00006337.bin
6dfea2dbbb777178f7ab99c224e60f78da062bf35f019d41fb7fe6967a1833a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6337 5308 bytes
font_01_sfnt_off00007554.bin
f5f61b19fec0b4a4dbb73ebc4646eeb11c20c75446894450f7dce2aac07a4074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7554 11268 bytes

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