Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8e7e5e30e109ef…

MALICIOUS

PDF

38.4 KB Created: 2020-08-24 04:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c99eea9672fcbda7ee3c849fe52616d SHA-1: b0ad03073b1d2e35012ea559318f721a224c0d7d SHA-256: fa8e7e5e30e109ef52b89de2ae4c702df50c312df81936d7a9f2ed5b826c88b5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the final destination. Another critical heuristic flagged the PDF as a link farm, with 30 generated SEO PDF links, indicating a likely attempt to drive traffic to malicious or compromised sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure, but the prevalence of links suggests a redirection-based attack.

Heuristics 3

  • 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.
  • 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=maine+pyar+kiya+songs+free++video
    • http://weposin.dockside-engraving.com/uploads/1/3/1/4/131437987/9487862.pdf
    • http://files.streamsmartdan.com/uploads/1/3/1/6/131607029/8966742.pdf
    • http://bimogabo.acresofopportunityranch.com/uploads/1/3/1/6/131606289/1831726.pdf
    • http://files.profesionallashes.com/uploads/1/3/1/8/131859370/3764073.pdf
    • http://dabibi.vcaec.org/uploads/1/3/1/4/131407267/6476267.pdf
    • https://cdn.shopify.com/s/files/1/0432/6277/1358/files/pededenixokipominufikufag.pdf
    • https://cdn.shopify.com/s/files/1/0440/8855/7718/files/cyrano_de_bergerac_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0438/2919/9005/files/cantonment_board_chennai_recruitment_2018_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/ferekinunomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7716/3426/files/fuxosa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/terajofibulow.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2943/files/ssc_stenographer_previous_paper.pdf
    • https://cdn.shopify.com/s/files/1/0438/2470/9782/files/vagipusalewanijakikobowu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2635/7160/files/medidas_dela_cancha_de_futbol_soccer.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7529/files/danipavipulotu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/zanagar.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/dls_2019_kits_apk.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005733.bin
fd0bb27b210c9773ec47f938c96b5ef3d8294b58636522a412fc44c0ed5b2980
pdf-font-stream PDF embedded font (sfnt) at offset 0x5733 5408 bytes
font_01_sfnt_off000069b8.bin
e83f01cbf41f64af478a9c4fd99f780ecef3c75ebea48fd5d68cad13202dcf0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 10096 bytes