Malicious PDF — malware analysis report

Static analysis result for SHA-256 17094c6424d94d8a…

MALICIOUS

PDF

52.4 KB Created: 2020-09-05 04:57:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722eb70217def162c8c443748be1f506 SHA-1: 9721ade2c49f315d18224c043670cd7cc93f86d4 SHA-256: 17094c6424d94d8ad0debf6c39752859bd81091430448a32d6e028a1f04b70d2
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=un+dprk+sanctions+report'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, one of which is a benign Shopify URL. The document body, though partially corrupted, contains the malicious URL and text related to a 'dprk sanctions report', suggesting a phishing lure.

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.me/wix?keyword=un+dprk+sanctions+report
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/9501/4056/files/europass_cv_template_francais.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/36468997763.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/zixexereb.pdf
    • https://static.usrfiles.com/ugd/73c254_9a8ef82afeeb46b59d16e31f53f1a52a.pdf
    • https://static.usrfiles.com/ugd/7cefa9_458f97f2589447cb8553b82e4a5bdbb2.pdf
    • https://static.usrfiles.com/ugd/4d6844_7b3f8064c03749a9b54743bc3f6cc5e6.pdf
    • https://cdn.shopify.com/s/files/1/0435/4709/9290/files/cancer_de_esofago_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/bear_market_trading_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/basketball_rules_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/judofegisomovimebuseweju.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/craftsman_dyt_4000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/les_adjectifs_interrogatifs_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0452/4628/3937/files/analise_combinatoria_combinao_simples.pdf
    • https://cdn.shopify.com/s/files/1/0431/4805/0586/files/mawumiridijibikopiko.pdf
    • https://cdn.shopify.com/s/files/1/0462/2893/0711/files/nsfas_application_form_for_2019_closing_date.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_off00008349.bin
7f9c09d6bcc0309ca7b37962b4ac389e965e6224eff7e328ff08827f10816ef2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8349 5088 bytes
font_01_sfnt_off000094aa.bin
02dc70c154cc90eb34cf8c8ab650bb906e8965acb0b5a9e1f52ead0935027bd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94AA 15520 bytes

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