Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd259afca62cfdf…

MALICIOUS

PDF

45.6 KB Created: 2020-08-18 13:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c310b5afea4f96f987da837184666633 SHA-1: c35b0438b0c7a49215e4ce9225ec1fad7d2704a1 SHA-256: 3dd259afca62cfdf4a7206a10036c44f36e619d1e21600c9d5cef30193219916
150 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 external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.com/pify?keyword=3d+daz+model+free', which is likely used to lure victims into downloading further malware. The document body, though heavily obfuscated, contains references to '3d daz model free' and the malicious URL, reinforcing the social engineering pretext. The ML classifier also strongly flagged this PDF as malicious.

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=3d+daz+model+free
    • http://luzasuzop.jdbctax.com/uploads/1/3/1/8/131857243/jodejoludu.pdf
    • http://komugo.shoprosethorn.com/uploads/1/3/1/8/131871825/lamezifon_povagerewinuri.pdf
    • http://putoke.indiecounterculture.com/uploads/1/3/1/1/131164250/7056968.pdf
    • http://files.jonbonnerdesigns.com/uploads/1/3/1/3/131378950/manezizepivasus_gusalowiwivuda_rirakaluragixov_balimimokovor.pdf
    • http://files.luxuwrist.com/uploads/1/3/0/8/130814475/dozin.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/nepevodewe.pdf
    • https://cdn.shopify.com/s/files/1/0433/9145/1303/files/16280713162.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/8812297850.pdf
    • https://cdn.shopify.com/s/files/1/0430/7307/7415/files/xujad.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/wamolaxinusikuzijurixoda.pdf
    • https://cdn.shopify.com/s/files/1/0435/4329/8207/files/csgo_trade_ups.pdf
    • https://cdn.shopify.com/s/files/1/0436/9137/6794/files/fovamufuwofigejofovuxujet.pdf
    • https://cdn.shopify.com/s/files/1/0440/1650/0886/files/algebra_1_math_problems_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2610/files/61466295405.pdf
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/catia_v5_part_assembly_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/jimulefurafarafiwixukixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/forensic_anthropology_training_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000598a.bin
ae2fe168ef00375d175b1121876dd75c54471a3e1dd560f8cf9eb26ecf7630a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x598A 4992 bytes
font_01_sfnt_off00006a77.bin
8eab7dd5b08c15b347695bacf68589ee7f8ef3c644a54da3ce4890e99e1c22c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A77 12956 bytes
font_02_sfnt_off0000946f.bin
43e84046d57c5d8edad47de9228ce36feb53c5e515436c294a71041590f3a3a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x946F 16132 bytes