Malicious PDF — malware analysis report

Static analysis result for SHA-256 155efd7b34ef33ab…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 00:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9fc28661fb30cbf49588a7706fb6fb8 SHA-1: d42cbeab8def3419599cb5fd9f4d3a4934008b97 SHA-256: 155efd7b34ef33abf1a271f9ea54bbbf67e1d59821fc5f0890d3463b9dd2b664
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to 'ttraff.cc', which is identified as a malicious redirector. This URL is presented in the context of 'exotic car hacks', suggesting a lure to entice users to click. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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=exotic+car+hacks+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/4396/0485/files/28265770856.pdf
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/gym_workout_plan_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0430/2202/4867/files/48465054433.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a36d9949354433ca8684a5763695c9d.pdf
    • https://static.usrfiles.com/ugd/9757e7_7181d769eb56470d8f62c90d89118270.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/72402895052.pdf
    • https://cdn.shopify.com/s/files/1/0428/7633/8335/files/shooting_games_apk_data.pdf
    • https://cdn.shopify.com/s/files/1/0454/7385/7686/files/yoga_poses_made_easy.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3359/files/critical_thinking_worksheets_for_1st_grade.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/40337491833.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_off0000683f.bin
c5f7d9291532cef60e63689aef30f5f9b13b6704f13b821d87c7e25f61baa796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683F 5300 bytes
font_01_sfnt_off00007a3f.bin
7ce028fb4a1bca7bf4cc211dca8aeddc7a666474c3662ab358d7d6cb48996ab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3F 10556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.