Malicious PDF — malware analysis report

Static analysis result for SHA-256 e32a1b93ce358049…

MALICIOUS

PDF

43.5 KB Created: 2020-08-18 16:22:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9f12033af4c4466a780600ba63bafe2 SHA-1: 20838dc7e99187d72d4ad083a9bdf6aee6b58bcb SHA-256: e32a1b93ce3580499b63757a1a1f91ebcbf5df202ee4cd13be968320b80bd8dc
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.cc', which is flagged as malicious. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the malicious URL and a deceptive title suggesting a lure for adult content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=call+boy+japanese+drama+full+movie
    • http://files.carpeverbum.org/uploads/1/3/0/7/130775970/gegimesar_rokoloju_lepamekokisafaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/15869179036.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/formulario_reembolso_bradesco_saude.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/83085412845.pdf
    • https://cdn.shopify.com/s/files/1/0432/7453/5067/files/separation_process_principles_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/tijipugupumefidume.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/39416504629.pdf
    • https://cdn.shopify.com/s/files/1/0432/9452/3552/files/56878693419.pdf
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/buxaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/git_revert_push.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/maa_durga_bhajan_mr_jatt.pdf
    • https://cdn.shopify.com/s/files/1/0430/4932/0610/files/biruzabovufewogomija.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c23.bin
ccaf2dbaa758a5829ec2a96a49c48149897eafaced1d9f6f2449489c0b757313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C23 3252 bytes
font_01_sfnt_off000057ca.bin
6cd8f26ffa60160fd060524340e7181dd81ddbe570ca2698294eacb813378bfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57CA 5392 bytes
font_02_sfnt_off00006a07.bin
8b90acba7b8c935bc670eefba146af793d3af6a648d6e393b7489ad33f0aa27a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A07 14872 bytes
font_03_sfnt_off0000928b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x928B 4324 bytes

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