Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59f4d8b321b7b42…

MALICIOUS

PDF

41.1 KB Created: 2020-08-11 08:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9893f410fa694e0004ae05be80a1109f SHA-1: 0ab9aa2655d7ef60e1a527a1b67a259993f87d6b SHA-256: e59f4d8b321b7b4209e3b4e6786cc956ef77570263fde4df210d93b44ed02778
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.com', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'Adobe pdf reader' and a URL that aligns with the malicious redirector. The presence of a PDF link farm heuristic further indicates an attempt to distribute malicious content. The primary attack vector appears to be luring users to click the malicious URL, likely to download further malware.

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=adobe+pdf+reader+windows+10+32+bit
    • http://files.manchesterctpal.org/uploads/1/3/1/0/131071166/6270390.pdf
    • http://wunol.chewthenswallow.com/uploads/1/3/1/4/131407406/pizaninodaxat.pdf
    • http://files.harderscharters.com/uploads/1/3/0/7/130775588/belonulole-repite-belexavo-pisufukunikufip.pdf
    • http://files.janpalson.com/uploads/1/3/1/8/131871864/rivilabujosasewo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9965/9176/files/50321172180.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/jogifunitalegojubote.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/duweguje.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/wumow.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6262/files/yet_already_present_perfect.pdf
    • https://cdn.shopify.com/s/files/1/0428/9481/9484/files/10522471814.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/ina_needle_roller_bearing_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/key_and_peele_football_names_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1651/files/45762340227.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/36819276744.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/ardhanariswara_stotram_in_kannada.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_off000061bc.bin
66821ea70e0fb4432bdf2bcd48cf88c7c3c2150b9ee5957a4b42611a8b2ed519		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BC 5716 bytes
font_01_sfnt_off0000754b.bin
882e8f33efcee7f6c33021be6b922f1db1104b488655fec8f8cc4e7cbf1e1241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 10088 bytes

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