Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bccd334a619ec7e…

MALICIOUS

PDF

43.2 KB Created: 2020-08-10 20:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f061290a0c0c505876e0cc7f1d2b116 SHA-1: 19dfbc8edda043838cc7b24185c1252b58a69083 SHA-256: 0bccd334a619ec7e6cbfa1126464e3fe1246228da9e1bffd0cf1604ffc8c829e
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to malicious redirector infrastructure, specifically the URL https://ttraff.cc/pify?keyword=new+adhd+medication+rules+pdf. The document body also contains this URL, suggesting a lure to trick users into clicking it. The presence of numerous other PDF links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.cc/pify?keyword=new+adhd+medication+rules+pdf
    • http://mezekebo.eastbournetherapy.co.uk/uploads/1/3/0/9/130969723/2255fc230a833f.pdf
    • http://files.softerthanbrittle.com/uploads/1/3/1/0/131070500/tilaxajisiwixibof.pdf
    • http://files.lachicalocajc.com/uploads/1/3/1/4/131453194/telejebixukedixop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/tazevorepibegubabutobesal.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/gevujedibe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1973/files/zuzoliwunebuboguzikefopem.pdf
    • https://cdn.shopify.com/s/files/1/0447/7576/8221/files/ssc_answer_key_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/security_deposit_receipt.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/97410393846.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/accpac_accounting_software_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/bloody_sunday_inquiry_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/5974/7745/files/52030117514.pdf
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/gimet.pdf
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/realistic_rock_carmine_appice.pdf
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/modern_architecture_articles.pdf
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/16987509189.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/xerusadariveraweni.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_off00006a0b.bin
99acf7c5258c5ffa00d91f2e07c7b63aca3273d636a49fbda13bcda198481e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A0B 5456 bytes
font_01_sfnt_off00007c80.bin
081f19d091e94b5d62dbba00d2dfbd4982061fe5763ed65ed4f98e63ca569b1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10224 bytes

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