Malicious PDF — malware analysis report

Static analysis result for SHA-256 64fc0cd26ebb14a2…

MALICIOUS

PDF

49.6 KB Created: 2020-07-31 22:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c6d5f5ac1c252b19c5c258e14f6a968 SHA-1: 336ee71386520224f483cc8f7caae69a06a24aae SHA-256: 64fc0cd26ebb14a2526b5b7463c39e1daf0f7920b0d72c1fd5173fec1ad87f2f
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a known malicious redirector. The document body, though heavily obfuscated, contains references to 'Falken tire consumer report' and URLs that are likely part of a link farm designed to drive traffic to malicious infrastructure. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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/pify?keyword=falken+tire+consumer+report
    • http://files.msdemers4thgrade.com/uploads/1/3/1/3/131384679/xokuze.pdf
    • http://files.2dmuseum.com/uploads/1/3/1/0/131070051/lojoxu.pdf
    • http://files.mrtrombetta.com/uploads/1/3/1/6/131636745/a13c53d712.pdf
    • http://files.rcuevasphotography.com/uploads/1/3/0/7/130776445/2ab37e07fb9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/sanewalibegemopimikebud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/50546148342.pdf
    • https://cdn.shopify.com/s/files/1/0430/0380/5847/files/rozusikala.pdf
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/wijajasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/98144842041.pdf
    • https://cdn.shopify.com/s/files/1/0429/1048/2588/files/4993853323.pdf
    • https://cdn.shopify.com/s/files/1/0430/4656/8098/files/bexemujavalubosuzijetuvex.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6262/files/vizusigawafetodanilus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/neziwifuribamoxaxulefoge.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/nanemuvadiviresu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6746/4093/files/jomulowenomune.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/didevebipuzumasutaj.pdf
    • https://cdn.shopify.com/s/files/1/0441/1329/7560/files/fogelutosejovutoge.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_off00008507.bin
34b7c2130d58014abdfe6b4fbf8767017c8712c67c9c3f3347723013939f8ec4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8507 5100 bytes
font_01_sfnt_off0000964c.bin
7c4139a8cb05a193abfef2eb5439a891d398c16bb4177178b073c589ccf75b86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x964C 10248 bytes

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