Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9cd85ec740ee03…

MALICIOUS

PDF

36.6 KB Created: 2020-08-09 03:29:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 683d7ebfc253af21c83c5aa4af7bb65c SHA-1: 2f3502fda7ec43b6ab170dd768e9c97042358502 SHA-256: 0b9cd85ec740ee03262db58e834f78c8064ea8831a86ec9bb1e283bcbffd374b
162 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links, including one pointing to a known malicious redirector. The primary malicious link, https://ttraff.ru/pify?keyword=educational+psychology+books+in+urdu+pdf, is designed to lure users by appearing as a search result for educational materials. The embedded JavaScript likely facilitates the redirection or further malicious activity upon clicking the link.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=educational+psychology+books+in+urdu+pdf
    • http://files.bikesandbuns.us/uploads/1/3/1/8/131856270/nezexi.pdf
    • http://files.mesivtafootball.com/uploads/1/3/1/1/131163613/7297191.pdf
    • http://files.peterschipper.com/uploads/1/3/2/7/132740264/jivefasumixu.pdf
    • http://files.stonecoldqueen.com/uploads/1/3/0/9/130969763/3798b99de65.pdf
    • http://files.americanfoursquare.us/uploads/1/3/2/7/132740218/majibomavapakabopi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7539/4979/files/xixuxikivimatezajet.pdf
    • https://cdn.shopify.com/s/files/1/0435/3042/0384/files/44828922516.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/luzunimevelavanajoxepif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/siva_manasukul_sakthi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6891/files/petiwosurolapuze.pdf
    • https://cdn.shopify.com/s/files/1/0438/7920/2984/files/foloke.pdf
    • https://cdn.shopify.com/s/files/1/0430/9290/2037/files/wogolubemez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/cbse_class_10_sample_paper_2020_download_with_solution.pdf
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/kitivoda.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005153.bin
d66be2592a37e3b267cc27297ae232b0241e3ae3c92a39e1ee1e5722614b700d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5153 5680 bytes
font_01_sfnt_off000064a7.bin
059cacdab4d10a98414479a9cf275c8e52e946bf9a5f3a64d1c1f731ef926167		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 9584 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.