Malicious PDF — malware analysis report

Static analysis result for SHA-256 1677c9f339707303…

MALICIOUS

PDF

40.1 KB Created: 2020-08-17 09:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97f9fa24491f5f0803c54b529225b629 SHA-1: f6f58618fee0db169796731b9bdc86c56b51ae1e SHA-256: 1677c9f339707303d00527de48116c3eec26a6b04d07a82fda7e98fb6633b9b1
154 Risk Score

Malware Insights

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

The PDF document contains a link farm and a specific malicious redirector URL disguised as an accident report form. The ML classifier strongly indicates maliciousness. The primary malicious URL, https://ttraff.cc/pify?keyword=illinois+state+police+accident+report+form, is designed to redirect users to further malicious content, likely for phishing or malware distribution.

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=illinois+state+police+accident+report+form
    • http://rudawoj.rlbciviccenter.com/uploads/1/3/1/4/131437089/2798543.pdf
    • http://files.ukprestigeproducts.com/uploads/1/3/1/3/131398194/gosisobaj-ludufanumex-wiburonesiti-vewabovuti.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/34733270782.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/best_of_anuradha_paudwal_chhath_geet.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/24092743641.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/femupuguvoromexus.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/79110335356.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/download_photobucket_album_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/english_dictionary_for_java_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/system_dynamics_palm_3rd_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/82476505256.pdf
    • https://cdn.shopify.com/s/files/1/0437/2951/8741/files/lijixujeguwokorun.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/pades.pdf
    • https://cdn.shopify.com/s/files/1/0437/3754/6917/files/rosidubewuvewafuwerafurup.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_off00005c3c.bin
eb8d26d6a36a28471675e965c488a6259cce784b9840b9f3adc8cb9fa8d02d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3C 5236 bytes
font_01_sfnt_off00006ded.bin
8598dbeb80c11992cd68782776ffb1d5999185ec76b9024f1847ad4636796f93
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DED 11076 bytes