Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95184a1c4c1ce90…

MALICIOUS

PDF

46.2 KB Created: 2020-08-27 17:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29ff363bea681a17617d27afb8cfc36a SHA-1: 82bacb8c24cd317af9647b5b487e4bc0758796ca SHA-256: d95184a1c4c1ce9090bd839aa07c5f56644cafca9df51b725b5ead152d8196f9
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=que+es+una+plataforma+informatica, is directly linked to a heuristic indicating malicious redirector infrastructure. The document body, though partially garbled, contains this URL and other Shopify links, suggesting a link farm or redirection tactic. No scripts were extracted, but the PDF structure and link analysis strongly indicate a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=que+es+una+plataforma+informatica
    • http://files.ywamkaikoura.org/uploads/1/3/1/6/131637226/pogisebaliju.pdf
    • https://cdn.shopify.com/s/files/1/0431/0886/0065/files/whatsapp_for_android_2._2._3.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/lonegudefadomofexizi.pdf
    • https://cdn.shopify.com/s/files/1/0440/6303/1448/files/cas_clinique_appendicite_aigue.pdf
    • https://cdn.shopify.com/s/files/1/0432/2852/8799/files/roluvowatituzopesipido.pdf
    • https://cdn.shopify.com/s/files/1/0433/3882/5883/files/11127293517.pdf
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/48834579277.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/1885232177.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6513/files/debugazurepot.pdf
    • https://cdn.shopify.com/s/files/1/0449/9865/6158/files/sunrise_simply_red.pdf
    • https://cdn.shopify.com/s/files/1/0430/6570/4602/files/business_card_template_ms_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/rename_file_in_linux.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1401/files/grandfather_mountain_weather_report.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_off000064c6.bin
a4452872bbb0dfe0e3ecaf601a790fc746e0390d5a870bf45d1f008ecfcda765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 5104 bytes
font_01_sfnt_off00007605.bin
6f4a15bb15156643c068f769e48646e4c7766dadc0fc328789717ca5d75e7bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7605 11744 bytes
font_02_sfnt_off00009c39.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C39 4324 bytes

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