Malicious PDF — malware analysis report

Static analysis result for SHA-256 7479c120342fb5b0…

MALICIOUS

PDF

41.8 KB Created: 2020-09-01 10:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb588f502ec87f9a9c9680867e854825 SHA-1: b8e5c499d47de333376f6e9bf863085e67f14572 SHA-256: 7479c120342fb5b074195eb26537611f981197775118f3a086d8971a36ea2ffd
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for 'netflix uk windows 7'. This suggests a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links indicates a link farm or redirection strategy. No scripts were extracted, but the primary malicious indicator is the redirector URL.

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=netflix+uk++windows+7
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/724fb5_4f5978ca27964efe971c60c0e5f98b2e.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_144c6cfb07a140688d5dea18379a75cf.pdf
    • https://static.usrfiles.com/ugd/efb3f0_e7486805fd9b4fb487d8027af61a6cac.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_c53362960dca4c298e003bfa0baadf0c.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/sony_cdp-_cx355.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/mappa_stradale_albania.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/ap_ezreal_s6.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/caballo_de_troya_11_descarga_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0451/9398/6199/files/behold_your_god_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24413790208.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/77168481025.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/buxonixosupajabojexogivu.pdf
    • https://static.usrfiles.com/ugd/7f46b5_c79e8c675a6b4d2bba094fe8a9876893.pdf
    • https://static.usrfiles.com/ugd/b8c837_23fd4484a92a4616b0e93462d91a9c37.pdf
    • https://static.usrfiles.com/ugd/60933b_729a554e243e4e56aab963aa53ef49a8.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_off000066c2.bin
f987cc7eac2a77a22112af5605516ab43b785e6df4e2181d95fdec21f58093ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x66C2 4868 bytes
font_01_sfnt_off00007795.bin
f6c56ab1a472146b7c6aee596344e33af27ffd95f357115e6e7a22d5c70e21c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7795 10316 bytes