Malicious PDF — malware analysis report

Static analysis result for SHA-256 f567a3541ab9fc04…

MALICIOUS

PDF

60.0 KB Created: 2020-08-07 09:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae77d7583c8885101285784b794ff2cd SHA-1: 3a4d9d8af445f22c34f40db6d8833c9e7e12c7a7 SHA-256: f567a3541ab9fc0405062c1ab4027543dd5e98864698dd85e5e1658c800feb59
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=geometric+figures+engineering+drawing+pdf'. This indicates the document is designed to trick users into visiting a malicious site, likely for further exploitation or credential harvesting. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent is clear from the redirector URL.

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=geometric+figures+engineering+drawing+pdf
    • http://files.dragofficial.com/uploads/1/3/0/8/130874566/binededepiru.pdf
    • http://files.getnoticedartdesigns.com/uploads/1/3/0/7/130775813/4512414.pdf
    • http://files.libbysaylor.com/uploads/1/3/0/7/130775850/fexogi-vapukudigen-vogasep.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/46283386547.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/55055300882.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/24440438135.pdf
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/bupis.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/three_days_grace_setlist.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/nedaxefuxafepetafesaduked.pdf
    • https://cdn.shopify.com/s/files/1/0435/2334/2495/files/fodoni.pdf
    • https://cdn.shopify.com/s/files/1/0448/3710/9917/files/the_horse_and_his_boy_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/alimentacion_saludable_nios.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/93104188568.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/melee_spell_attack_5e.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/80839626801.pdf
    • https://cdn.shopify.com/s/files/1/0441/1123/3176/files/megelesujekovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/plaquetas_altas_en_perros.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_off00008b2c.bin
5cd17285b781ddc177c4cbb5fc263877bc66db7b2762d54313998f072e59eed1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2C 2680 bytes
font_01_sfnt_off000096ac.bin
ce1df0ceecfc5df244566fb1ac5f36da19faebfda3e956af3f71d08e181443ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96AC 5568 bytes
font_02_sfnt_off0000a9a1.bin
c738be39d2a52da5fef8d725263340786bf3c942e03377b2e7586a55762c096f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A1 10408 bytes
font_03_sfnt_off0000cd1a.bin
7f372bda6a6be437a65a05cef65d997d3dc67ad2f094454afad584a288ca48f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD1A 16108 bytes

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