Malicious PDF — malware analysis report

Static analysis result for SHA-256 00ab9b178c7eedcd…

MALICIOUS

PDF

49.6 KB Created: 2020-08-29 19:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31ad73f68e2be674aa797e3caf900dcd SHA-1: ebd70058eaa0599ba6a57e2a3c0884b1b46380d5 SHA-256: 00ab9b178c7eedcdf47ec8370f87da013d08eed2db9569e5d4bd4c22da3fbd3b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised with a keyword related to a popular game. This suggests a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.ru/wix?keyword=real+racing+3+events
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/a467d2_2da2777e37094633a1d130dca8986515.pdf
    • https://static.usrfiles.com/ugd/b8c837_6ebaa75bf0de41ca8c478a6c151162ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_c8284ad6a669425290722b4b9a89f674.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0762/files/61695151605.pdf
    • https://cdn.shopify.com/s/files/1/0461/9829/2638/files/87998119424.pdf
    • https://cdn.shopify.com/s/files/1/0440/7050/2550/files/xavuwewewif.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/paris_metro_map_high_resolution.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c71c59435294bb49a24a87059cfecf8.pdf
    • https://static.usrfiles.com/ugd/b8c837_58663ce709c448bca39a3026dc301f13.pdf
    • https://static.usrfiles.com/ugd/3aca14_539e50ba2c2a49ca91e1f6de713b5478.pdf
    • https://static.usrfiles.com/ugd/90423f_cd7832cfcd4041a496a43926e3a694f7.pdf
    • https://static.usrfiles.com/ugd/65b209_79cace3cd8a44c53847da8202ad3523b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e48e6ace5ee48cfb4859bc2255ecf25.pdf
    • https://static.usrfiles.com/ugd/b8c837_658a91e6d12544a3b1221d2717d0980e.pdf
    • https://static.usrfiles.com/ugd/2f3ac6_cbfdc36f5bf9405a93f1498956d0fb63.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_off0000822f.bin
145f5bab544d377cb723b6d4cbf4ed050a1700e157bc0ae45afbe51d3d55bd0c
pdf-font-stream PDF embedded font (sfnt) at offset 0x822F 5200 bytes
font_01_sfnt_off000093f8.bin
c88579e66fb0f6b0336ae877bae23f0e2521ae1567ad3fd0ad5573f73d26a22f
pdf-font-stream PDF embedded font (sfnt) at offset 0x93F8 11592 bytes