Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fe09783e73e9508…

MALICIOUS

PDF

34.7 KB Created: 2020-08-10 17:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b7950ddc670b34a5501155b74a897c0 SHA-1: d1aa246f1b38ea8fb07508d7cee23565a7e99177 SHA-256: 3fe09783e73e9508f82fb51b402d6acc7c9cd325962907b1c49c252f6c2f506c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL leading to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=autocad+house+plans+drawings+pdf', which is likely intended to lure the user into clicking through to a malicious site. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to manipulate search engine results for discoverability.

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=autocad+house+plans+drawings+pdf
    • http://files.paveshare.org/uploads/1/3/1/4/131408664/3126630.pdf
    • http://files.nataliewetzelgallery.com/uploads/1/3/0/9/130969489/6262630.pdf
    • http://files.naturesheartlandfarm.com/uploads/1/3/1/4/131452952/4015788.pdf
    • https://cdn.shopify.com/s/files/1/0434/9578/4600/files/72676492268.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/noxuwozinasekame.pdf
    • https://cdn.shopify.com/s/files/1/0431/7167/6314/files/patonopegok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/shooters_chief_keef.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/72455211728.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/53821411003.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/way_of_the_wolf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6987/files/denosivikevemufatine.pdf
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/75745091495.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdf
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/lonera.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/32668985349.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/cutnell_and_johnson_9th_edition.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_off000049e4.bin
aeada30e368f1f576de1157618c6932dc959d00b576bb70c9b3292ae971d5f23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E4 5496 bytes
font_01_sfnt_off00005c9d.bin
ef5c001596416c8ec0cf842e0e073c238206fcd4a7982f2f4c3562349c7ab98c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9D 9736 bytes

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