Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6bfcb0f47138554…

MALICIOUS

PDF

99.5 KB Created: 2020-08-11 04:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e30ab20dc58bc896b356ae5159e3daf SHA-1: 8d78861a95c80f9e4ba75e29472e94983d3048ce SHA-256: e6bfcb0f471385543cedd1df5cd95cd3c5ae827cfb2ac16ef167344ea5888c24
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=arthashastra+project+in+marathi+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The file's purpose appears to be directing users to this malicious infrastructure.

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.ru/pify?keyword=arthashastra+project+in+marathi+pdf
    • http://files.southernaznorml.org/uploads/1/3/1/3/131380687/3643902.pdf
    • http://files.dandelionridgefarmky.com/uploads/1/3/0/8/130874489/xetudabew-ritup.pdf
    • http://files.uniteddisciples.org/uploads/1/3/0/7/130775402/8274375.pdf
    • http://wofutu.cindyhammondfineart.com/uploads/1/3/1/3/131380505/440329.pdf
    • http://files.applelandstation.com/uploads/1/3/0/7/130740073/lesozefimorivel.pdf
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/68144212312.pdf
    • https://cdn.shopify.com/s/files/1/0437/7526/2869/files/zosepanilagibemowone.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/vejezuron.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/sokurezixesedavatefina.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/75194593439.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/soxikekinetiwarulokupo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/dewidufabaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8476/6620/files/79150171886.pdf
    • https://cdn.shopify.com/s/files/1/0429/2873/4367/files/82624349826.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/design_patterns_in_java_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/11556458677.pdf
    • https://cdn.shopify.com/s/files/1/0429/3669/6995/files/fogaxazidokowi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5950/3519/files/juzixu.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_off000124c5.bin
392155aaf1aee127592af84d33c62d86a4bbbf68fce883b2df2c2c0c083b6aaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124C5 5428 bytes
font_01_sfnt_off00013711.bin
4cd60777e265fafd80a6c4ac8a8f541642313e2b1c6670a3899fdf55b12f51bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13711 3772 bytes
font_02_sfnt_off000142b6.bin
5eddf472bd7612581e91d90eadcd4b455026e1c8176c936d9193279f1c084871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142B6 10624 bytes
font_03_sfnt_off0001676c.bin
c580c3440fab4c8c7004505597307e5137cc8f131a6062559b46271c73791135		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1676C 7028 bytes

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