Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d80e5aca3ab0d69…

MALICIOUS

PDF

45.8 KB Created: 2020-08-30 05:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99d037867af6044850d354eb67af8644 SHA-1: 107a5c82a2dde351c376fc5a4eea24f0c7db229d SHA-256: 6d80e5aca3ab0d699eed269f844505a2ed6ef8a89fd91ab35037fb1dbb14ceea
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector infrastructure. The primary link directs users to 'ttraff.com', which is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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/wix?keyword=warframe+best+dagger+stance
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8910/0951/files/20325554770.pdf
    • https://cdn.shopify.com/s/files/1/0429/7264/3491/files/equifax_canada_credit_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4549/files/13224756175.pdf
    • https://static.usrfiles.com/ugd/b8c837_8851dfdb54e04661ba2ea098443a24b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_50302e195d97412e80bf43dd01a2dd3b.pdf
    • https://static.usrfiles.com/ugd/80c1db_15222aa80d5b47a2977eaa3a699f1392.pdf
    • https://static.usrfiles.com/ugd/b7082a_6863aaa30a0240dd9847b5e08c157b59.pdf
    • https://static.usrfiles.com/ugd/b8c837_356df3f3bda94e95986ae01f14f53a80.pdf
    • https://static.usrfiles.com/ugd/b8c837_b1054495f0e94cb0a6339e3c4811fb71.pdf
    • https://static.usrfiles.com/ugd/fd3290_a40defc6921e4878996c1512112ed7eb.pdf
    • https://cdn.shopify.com/s/files/1/0434/2644/7525/files/devugim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5054/8899/files/bipolar_treatment_plan.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/milamupevimutesarexut.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/best_app_for_annotating_with_apple_pencil.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/95237112474.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_off000074be.bin
147d22354cc32080d853445bb80eee382e097fb051606ec12b124d5555c3b657
pdf-font-stream PDF embedded font (sfnt) at offset 0x74BE 5460 bytes
font_01_sfnt_off0000873c.bin
0ed3ca7faace2ddff4dee321e48dee0ea2fccd3c0f7b989f97dbac86e8c1296d
pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 10288 bytes