Malicious PDF — malware analysis report

Static analysis result for SHA-256 919ae3c17040bb95…

MALICIOUS

PDF

54.6 KB Created: 2020-08-20 10:04:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c887638b594a555a11ca72ce9879aa SHA-1: 27ad399f78e192229fd5e37628c0102bf1a8716a SHA-256: 919ae3c17040bb95c78c061dc3af55451d6a96597d77adef3c7167f73e08932d
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text that appears to be related to the malicious URL. The presence of a large number of external PDF links suggests an SEO spam or link farm tactic. No scripts were extracted from this sample.

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=ek+reporters+lekhak+ka+naam
    • http://files.projectechelon.org/uploads/1/3/0/7/130776420/nilezenebanamikobuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1673/9222/files/38325007090.pdf
    • https://cdn.shopify.com/s/files/1/0428/8043/4342/files/31701384343.pdf
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/wikuwafakod.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/zelofefejivelogabob.pdf
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/back_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/punufawofawudofamakapabuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/dulumutotivodavapetov.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/73630289041.pdf
    • https://cdn.shopify.com/s/files/1/0435/5417/7183/files/4870939995.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/romuwade.pdf
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/44989178685.pdf
    • https://cdn.shopify.com/s/files/1/0431/5240/8742/files/mubotuzulofajigovolegil.pdf
    • https://cdn.shopify.com/s/files/1/0437/5642/1278/files/60618742432.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b6e.bin
5b509088083a18a63e0b60c9f3c1f490914216d6764092acf6837df2f916cc57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B6E 5080 bytes
font_01_sfnt_off00009c80.bin
15b665c03c4937bb298388c647079da6517f570dd4b9dd0d64bba55d05956ee8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C80 10800 bytes
font_02_sfnt_off0000c16b.bin
841262a473acf7d4c9a9ad60a6d80b51c64a82bcba5238abb3884d66fb06dff7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC16B 2800 bytes

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