Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c4b3be1a4bab930…

MALICIOUS

PDF

45.7 KB Created: 2020-07-31 21:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58c5bbff4bbdad0e13335ff55b8aa2ec SHA-1: fddc84c998db35c8a28478425142b68b94d4425b SHA-256: 9c4b3be1a4bab9303d2ad48e3a53d8375c90f5d9c6ab1a3eee8ca2cc2f09e721
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=long+range+mineral+scanner+rimworld'. This suggests the document is designed to trick users into visiting malicious infrastructure by disguising the true destination behind seemingly benign or game-related content.

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=long+range+mineral+scanner+rimworld
    • http://files.cleanfreshbeauty.com/uploads/1/3/0/7/130775198/30e097a2ecc9c.pdf
    • http://files.ciscodigitalnewsroom.com/uploads/1/3/0/9/130969934/6138151.pdf
    • http://files.kansascityamprepair.com/uploads/1/3/0/9/130969146/7d7fa7.pdf
    • http://files.amorajstudios.com/uploads/1/3/0/7/130739154/cc081a4f.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/72610745714.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6423/files/53368395905.pdf
    • https://cdn.shopify.com/s/files/1/0431/4873/8720/files/89431350746.pdf
    • https://cdn.shopify.com/s/files/1/0431/9543/3117/files/puguwan.pdf
    • https://cdn.shopify.com/s/files/1/0437/7300/1877/files/99261008111.pdf
    • https://cdn.shopify.com/s/files/1/0430/7632/1434/files/xizovo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/21433068341.pdf
    • https://cdn.shopify.com/s/files/1/0430/7435/5351/files/39608683153.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/wepuge.pdf
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/fiwitaj.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_off00006771.bin
2ec897244041824b5a95ff1d04a3b5532047ac99a97c1cfd4bd1e2f14a3a7e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6771 5292 bytes
font_01_sfnt_off0000796e.bin
b5f1517478f774606b172845747528024e0453c5d0c80bc58f05ada85abad482		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 15716 bytes

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