Malicious PDF — malware analysis report

Static analysis result for SHA-256 c876232e1dd88820…

MALICIOUS

PDF

70.4 KB Created: 2020-08-17 07:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcdb1271e5d79dd5a539c1619a5beb4b SHA-1: 00d001f2467f9b722c330789af72c7afaf3e3ae5 SHA-256: c876232e1dd88820a2e0bb5a4eff0d9829e2491dc659fe74b5f7e31bea327729
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'new bollywood movies poster' and the malicious URL, suggesting a lure to entice clicks. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a probable phishing or malware distribution attempt.

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.ru/pify?keyword=new+bollywood+movies+poster
    • http://files.mandyhodgewellness.com/uploads/1/3/1/6/131607522/dazozelozupej.pdf
    • http://debobaxo.dammannfarms.com/uploads/1/3/0/8/130874431/todobofowibugom_wekulemapuf.pdf
    • http://piled.napsautosales.com/uploads/1/3/0/7/130775726/famomazirepix.pdf
    • http://files.ewingbronzes.com/uploads/1/3/1/8/131856624/sodeku-kuxupekitezi-ruwajujeju-bufapovan.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/ronise.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/air_conditioner_maintenance_checklist.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/zigixuvagajajesewedigabi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/sample_welcome_speech_in_tamil_language.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/53641883895.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/parts_of_air_conditioner_and_their_functions.pdf
    • https://cdn.shopify.com/s/files/1/0433/2116/3941/files/lobutivogafoxulasak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0792/5654/files/78145619441.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5498/files/mazda_3_owner_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/6213/0853/files/chuyn_t_nh_thnh.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/jefetip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27055139941.pdf
    • https://cdn.shopify.com/s/files/1/0429/2870/1603/files/zetovebojag.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/damifezezobomowubegiba.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/12112398004.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6ec.bin
0fed94f639df41db020f42eea3e0165faa3d62c924a446939d41ce379c10d869		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6EC 4940 bytes
font_01_sfnt_off0000d7ce.bin
5d49cc51525f8c065daead01f56094919b7a3ec86e5c0dc6012f75fa223d55a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7CE 12144 bytes
font_02_sfnt_off0000fe44.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE44 4324 bytes

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