Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f05a3e466dae8b3…

MALICIOUS

PDF

46.8 KB Created: 2020-08-23 15:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb5c858445b88d71fbb346cadf549a05 SHA-1: 4ae334416c7b3cfe98303d646fad7ab2db37c357 SHA-256: 7f05a3e466dae8b3f53c20eeb774c1a0d5ceaca957bbf716005fea4d9903f9ff
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=top+rated+food+processors+consumer+reports', which is a critical finding. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but includes the malicious URL and references to 'top rated food processors consumer reports', suggesting a lure to a potentially deceptive or malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=top+rated+food+processors+consumer+reports
    • http://files.swingnswim.com/uploads/1/3/1/4/131407632/9bf67f06f1b.pdf
    • http://kemif.mayfieldcommunityleague.com/uploads/1/3/2/6/132682883/sedabavulikabulogot.pdf
    • http://files.neighborhoodacupuncture.com/uploads/1/3/1/1/131163635/muvubox.pdf
    • http://suxena.armstrongfamilylaw.com/uploads/1/3/0/7/130738629/cff5acb0.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/78671328478.pdf
    • https://cdn.shopify.com/s/files/1/0436/8472/4889/files/2769483869.pdf
    • https://cdn.shopify.com/s/files/1/0432/0942/5056/files/concierto_de_aranjuez_trompeta.pdf
    • https://cdn.shopify.com/s/files/1/0439/0073/1547/files/60834377491.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/post_hole_digger_vs_manual_auger.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/water_supply_and_sanitary_engineering_by_rangwala_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1501/files/contract_manufacturing_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/osrs_botting_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/1991/7719/files/59909948431.pdf
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/xebupobukanimizijowaro.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_off0000786c.bin
0f88a2d89315d4d922201afb4fb9b4669848e4661ff1e85a5c86b64cadf37b5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x786C 5220 bytes
font_01_sfnt_off00008a0f.bin
211add144dba1d0d760046bd15b6ca98dd681d0dc1c8cf2d80e54bbf949447ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0F 10444 bytes