Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13d8677bdbe410e…

MALICIOUS

PDF

54.0 KB Created: 2020-08-04 01:33:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 795e3d48f8cd5a428a9747c5c5fce5fb SHA-1: a43267c5425263da9ef54c89a909cf76eee70d7d SHA-256: f13d8677bdbe410e273bc2074d7dc3db52228a75dc944fb3a76db0f24d121995
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=project+management+budget+template+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, including 'https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdf'. The document body, though heavily obfuscated, contains text related to project management templates, suggesting a lure to entice users to click the malicious link.

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.com/pify?keyword=project+management+budget+template+pdf
    • http://mugade.postmaster-jobs.com/uploads/1/3/1/4/131437886/9068800.pdf
    • http://files.robocupjunioruk.org/uploads/1/3/0/9/130969260/zugivirufo.pdf
    • http://files.themoveablechurch.org/uploads/1/3/0/8/130874128/9175303.pdf
    • http://files.ucsbvsa.com/uploads/1/3/0/8/130874403/fatuvukajisedazad.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdf
    • https://cdn.shopify.com/s/files/1/0440/2891/9973/files/19064706391.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dedagefegumam.pdf
    • https://cdn.shopify.com/s/files/1/0432/4904/1563/files/foxebavexazamijoxikagef.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/45012737216.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/dosiguzap.pdf
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/radizalewideta.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/rugofepuwosuronakuwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/42482349572.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/texobup.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_off000095cc.bin
166feef3514d8ddfc81a7e8d3300b91846a504b5a91821c0bb7bf4c9c8d63695		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95CC 5512 bytes
font_01_sfnt_off0000a875.bin
bdc7e8657b95b10559ae9104f982d3f8b5ab3a5b3640595669a7c48e7fde9704		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA875 9948 bytes

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