Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a4ec91e7126ae0…

MALICIOUS

PDF

61.5 KB Created: 2020-08-19 00:17:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f959b7f13670a7c0a0a8ee1c28c2cfd SHA-1: 880ec77b43ba64166128d9be85a7c0f00670faed SHA-256: a2a4ec91e7126ae0e0f6a8971d3945de77f1d9db583700fa50c3dcad7da3a7b7
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=platform+singer+with+himesh, which is likely used to redirect users to further malicious content. Another heuristic indicates a PDF link farm, with https://cdn.shopify.com/s/files/1/0432/7076/6750/files/platform_bed_wood_pallets.pdf being the first identified link in this farm. The document body contains garbled text but includes the malicious URL and a benign-looking PDF link, suggesting a lure.

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.com/pify?keyword=platform+singer+with+himesh
    • http://files.lptannettdesigns.com/uploads/1/3/1/6/131606453/e2436faf1fa8.pdf
    • http://files.monicasscarfs.com/uploads/1/3/0/7/130739814/vimegijatitopax.pdf
    • http://files.saltwatercowboyfishing.com/uploads/1/3/2/7/132740533/14f09f71f.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/platform_bed_wood_pallets.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/16723779332.pdf
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/liwofeliluzajiwugeposemof.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1718/files/rukeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/9046/0324/files/algorithms_for_optimization_mykel_j._kochenderfer.pdf
    • https://cdn.shopify.com/s/files/1/0440/1142/1854/files/rsistance_aux_aminosides.pdf
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/icy_veins_demonology.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/86922675043.pdf
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/college_physics_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/3823/5031/files/36097094726.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006814.bin
135af22e2c782be99b591203e63ff3863d52493688efa30264063d754ec4dbca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6814 5272 bytes
font_01_sfnt_off000079dc.bin
5b02aa88e8c49fcfa9aa37e634824a72ef11862639a04d2693d0d6fa831cbdb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79DC 11656 bytes
font_02_sfnt_off00009ea1.bin
89a202fd63fb0d3cb65ae25567399e9a141e47c48ff90f81900eb9662d19ed4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA1 10604 bytes
font_03_sfnt_off0000c2fe.bin
f6c4d67bb200a929cdb47031be8d54ec5a84a46009406899549ce715f8dc671c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC2FE 16488 bytes
font_04_sfnt_off0000d958.bin
b804c7068d8408d76dc018a12c5c424a6543a3d208b6cf51301e2aa02e176415		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD958 3776 bytes

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