Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ed0063c1bc63f93…

MALICIOUS

PDF

62.2 KB Created: 2020-08-18 21:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a45f3e56abbf545c61553b86c6b8287b SHA-1: 9f706986076b988f3246f83cba53f2ed9f30fad2 SHA-256: 3ed0063c1bc63f934cfa218aeade7a8a3ae2ea7aca5708a0a51d25633dc9c09a
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text related to 'Carbidopa levodopa prescribing information' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning to drive traffic to malicious sites.

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=carbidopa+levodopa+prescribing+information
    • http://mifekeg.actorheadshotphoto.com/uploads/1/3/0/7/130740480/5d112bf6.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/zowurabujujise.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4934/files/37816775756.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/99281317979.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/vehicle_inspection_checklist_template_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/kobufilimujaxudorejedev.pdf
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/analytical_writing_sample_essays.pdf
    • https://cdn.shopify.com/s/files/1/0433/6215/6702/files/libilure.pdf
    • https://cdn.shopify.com/s/files/1/0432/8577/4491/files/76492502013.pdf
    • https://cdn.shopify.com/s/files/1/0432/4147/2160/files/abrsm_grade_8_piano_pieces_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/mavagekafubofoxujebekiwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/neuritis_intercostal_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/wow_classic_swiftness_potion.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_off0000b5de.bin
4faf40258352beff2ad04537d596e931357d39ea098b3d43d088051ba1960741		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5DE 5580 bytes
font_01_sfnt_off0000c8c7.bin
1293ada49c3e6d79b726bfcdcbed81f01d45996ce0561d1c6efab312e73fa790		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8C7 10260 bytes

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