Malicious PDF — malware analysis report

Static analysis result for SHA-256 344ed46cd6b17f64…

MALICIOUS

PDF

51.8 KB Created: 2020-08-03 05:42:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 178ebe9da5f9119637a2576973c94fcc SHA-1: ffb8cc644c85513e3df890f68d43f24ed555f0f6 SHA-256: 344ed46cd6b17f64d99b82a53bc70f63ecaae8fcf60366da5b10d6b942c63cbd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'https://ttraff.ru/pify?keyword=prizerebel+point+hacker'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or redirection scheme. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates a common tactic to bypass security by instructing the user to open a password-protected archive, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=prizerebel+point+hacker
    • http://files.musicalcolts.com/uploads/1/3/1/3/131379301/gilepanelunavoravu.pdf
    • http://files.asce-slo-ymf.com/uploads/1/3/0/7/130739754/174be4f04a1e20f.pdf
    • http://files.inrarefiedair.com/uploads/1/3/1/0/131071041/2272289.pdf
    • http://files.goldenrodgala.org/uploads/1/3/1/3/131383720/bekeri_wumebujuw_bozaxir_powefovuwoneniz.pdf
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/52733192429.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6375/files/23589056003.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/vomabanizijibarogazej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/cheat_codes_for_gta_v.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1184/files/tunoxadosufivusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0956/4064/files/nawoxagikit.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/wezulezifedaxotavajuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/sefagizupe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/52265965239.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/honda_gcv160_engine.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/1683430903.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068ef.bin
b61df8b75a19c156402cc53ed01c1b46b470c3599b5e5ef7bdda712067e14b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68EF 4884 bytes
font_01_sfnt_off0000796a.bin
168f0ebb4ee30a3e4b59ac53275df9efb1e3b3f2224c6e3b30ccfb956f1306fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796A 10764 bytes
font_02_sfnt_off00009e73.bin
fadbcb98d8f1d62e9813a7609f5fb4a164c0f07ae0437f2e84255f631a10dc0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E73 16096 bytes
font_03_sfnt_off0000b33a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB33A 4324 bytes

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