Malicious PDF — malware analysis report

Static analysis result for SHA-256 f11edcbd48abe092…

MALICIOUS

PDF

73.1 KB Created: 2020-08-09 05:22:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52c6fd0be78f60bd5dcd0451e684739e SHA-1: 8c4d688e13b5cbdc4d26a93855df0ed7952b3d00 SHA-256: f11edcbd48abe0927283fcb88f150efb2c1b50c90d8bb0078e0730bf74ef75bb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary goal is to lure the user into clicking the malicious link, likely leading to further compromise.

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=bearing+designation+skf+pdf
    • http://tidibaris.michelleblanchette.org/uploads/1/3/1/6/131636725/gadalisukux-xokizarumujoju-mumosukobovo-dipofasa.pdf
    • http://files.weightlosswithannamarie.com/uploads/1/3/1/4/131437276/mitisotigawuvow.pdf
    • http://files.shopatpky.com/uploads/1/3/1/8/131856166/3508358.pdf
    • https://cdn.shopify.com/s/files/1/0439/2789/6219/files/electrolysis_chemistry_igcse.pdf
    • https://cdn.shopify.com/s/files/1/0430/4617/4877/files/wasokokuxopigivutu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/xabomemibasusuke.pdf
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/72077957003.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/tuxewusewebug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/gipogodo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/55815088097.pdf
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/68812668909.pdf
    • https://cdn.shopify.com/s/files/1/0428/8453/0343/files/how_to_put_fantransltions_into_layeredfs.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3643/files/20482043818.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/40219154906.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/
    • https://cdn.shopify.com/s/files/1/0428/8453/0343/files/how_to_put_fantransltions_into_layered

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8f6.bin
d59f48d93a597b3159884c4666471ad1925f86b717c65510c23efe75b775b29d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F6 5080 bytes
font_01_sfnt_off0000da4e.bin
e1c9ea78e88bb7a844a9c9b0b7f0d2f862a4ab4462db5a3ddeaeadcfefeba12b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4E 14468 bytes
font_02_sfnt_off000107a4.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A4 4324 bytes

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