Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e6ad4fd4afdfa90…

MALICIOUS

PDF

45.1 KB Created: 2020-08-30 02:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 351b84b241ec2f7c3b703a51473c9000 SHA-1: e6030c7961b475f5d4abda1a4e9ec3040e430d84 SHA-256: 3e6ad4fd4afdfa90b97c9cafe032a59ceccb66832a36aec34ed11f4cd817641a
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to direct users to malicious content. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify-hosted PDFs, suggesting a link farm or content distribution strategy. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector 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.cc/wix?keyword=what+color+is+your+personality+type
    • https://cdn.shopify.com/s/files/1/0434/5505/3989/files/93495934752.pdf
    • https://cdn.shopify.com/s/files/1/0428/5104/1447/files/jolly_phonics_initial_sounds_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/nedetebada.pdf
    • https://cdn.shopify.com/s/files/1/0433/4891/8440/files/application_form_for_govt_job.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/marketing_concepts_and_strategies_william_m_pride.pdf
    • https://cdn.shopify.com/s/files/1/0429/3951/5039/files/video_from_vimeo_to_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0434/8166/1600/files/site_reliability_engineering_google.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/anglo_eastern_online_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/tupobujafiwexeka.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/algebra_1_statistics_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0440/8007/0821/files/download_file_from_url_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/8551/3379/files/80643658132.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_off00006593.bin
62106157705a8df1d5c576f31731c16092aeb5a14ae2c095dfe014d8880e58b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6593 5016 bytes
font_01_sfnt_off000076a4.bin
25033be6be3f598c3e62b9fa53fc3c86ca31840b2fce87d437e8e14a8bcb290b
pdf-font-stream PDF embedded font (sfnt) at offset 0x76A4 10276 bytes
font_02_sfnt_off000099cb.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x99CB 4324 bytes