Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7197580543690be…

MALICIOUS

PDF

52.1 KB Created: 2020-08-05 05:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fec3d1f69d1ee7b389f2bf9594336a2 SHA-1: a945006aa27f432d4c23df3f5100fbbc84e76d60 SHA-256: f7197580543690be23de3ec7b66c1907c1647a80f14bd8558ba5fc5da62522cd
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'electrical design engineer interview questions and answers pdf' and the malicious URL. This suggests a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of redirecting users to external sites.

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=electrical+design+engineer+interview+questions+and+answers+pdf
    • http://files.baysidewestbay.co.uk/uploads/1/3/1/3/131397964/4253755.pdf
    • http://files.liberum13.com/uploads/1/3/0/7/130739777/4147947.pdf
    • http://files.tinagebhart.com/uploads/1/3/2/6/132681969/3800f8.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/waxekisexerilepe.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/8th_grade_books.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/93819852267.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/98251942696.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/livro_zen_budismo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8729/8714/files/74681993916.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87074842841.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/www._kickasstorrent._com_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4546/9858/files/2675299558.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/29669495860.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/dinopevugutenitaxes.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_off00007f80.bin
8a8d04fb45f280828f646d02dcd481cb49a0923610286a05fdcf0f0ec28991b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F80 5440 bytes
font_01_sfnt_off00009217.bin
0f8623c21c0ee3fef0102ab2eaf3fbda6304cd40f11e50c3f8867b50f268ee55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9217 10148 bytes
font_02_sfnt_off0000b498.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB498 4324 bytes

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