Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b4e8e4f9277266…

MALICIOUS

PDF

36.7 KB Created: 2020-08-13 23:39:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f9bc50eaceebe230e53f805de713c58 SHA-1: 2092ed9aac01f0ebeabc7e855cdda06997b5f7a7 SHA-256: 77b4e8e4f92772662a2e59e01e01ab20e8023c4fafb6e6b4f14e4d8e40b3eebd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'size guide blundstone' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further indicates a malicious intent to distribute content or redirect users.

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=size+guide+blundstone
    • http://files.thecoveatfoxhollow.com/uploads/1/3/1/4/131453031/gakosoku.pdf
    • http://files.angelicaatelier.com/uploads/1/3/1/6/131606487/xiloxozidedewex.pdf
    • http://files.edgemotorsportsrva.com/uploads/1/3/0/7/130738596/3344290.pdf
    • http://seseti.fwbhs-band.com/uploads/1/3/2/8/132814930/lesesezag_devefovizose_mabid_kelozu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2550/6208/files/55139802655.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8215/files/silawasekagep.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gopag.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/18137382977.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdf
    • https://cdn.shopify.com/s/files/1/0443/6181/0076/files/cantonese_language_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/6923621242.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/vabininidefazapibomuxaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwizesovipijekugufex.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_off00004be7.bin
77be1a9b2c26f43fa06f02433b1b454948e7b4bf2a376a669d6980cc4e9bf648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE7 4980 bytes
font_01_sfnt_off00005ced.bin
c846b556fe7c9861824dc54d1855c11a8fe4d107318ceac202bfa3ec568ac7a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CED 13344 bytes

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