Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eac89704400f275…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 02:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74e6f00787efa3c0a9cc301298101cab SHA-1: 2223ffaa53aa8ce09dbe9f7eba94eaf1aafbeb0f SHA-256: 9eac89704400f2750f01a624b9c61bd59b007dd5c707c993c58bed01df28c8a1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=biological+control+of+pest+pdf', is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. The presence of numerous links, including the malicious redirector, indicates an attempt to lure users to potentially harmful sites.

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.ru/pify?keyword=biological+control+of+pest+pdf
    • http://fijijike.lairginitiative.co.uk/uploads/1/3/1/0/131069839/cea25.pdf
    • http://suboku.kendrickcheung.com/uploads/1/3/1/4/131406665/4620652.pdf
    • http://jipawore.adorableskunk.com/uploads/1/3/1/4/131483083/821ce485919f.pdf
    • http://files.iamwowblingonabudget.com/uploads/1/3/1/3/131380045/871808.pdf
    • http://files.stmaryselmbridge.org/uploads/1/3/1/8/131856191/ac34c6c.pdf
    • https://cdn.shopify.com/s/files/1/0431/0695/9514/files/kivonez.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/faketalafojolimafaguro.pdf
    • https://cdn.shopify.com/s/files/1/0440/7482/7941/files/89924171430.pdf
    • https://cdn.shopify.com/s/files/1/0431/1089/1682/files/westworld_black_hole_sun_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/75183338867.pdf
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/13734517063.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/tunavawivivakuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/64768794066.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/24654445420.pdf
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/classroom_management_strategies_the_impact_on_student_achievement.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7963/files/vinefesutobe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/download_679_fetty_wap.pdf
    • https://cdn.shopify.com/s/files/1/0451/1825/9365/files/backup_administrator_interview_questions_and_answers.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_off00006bf2.bin
9341764894e6e907e7c29fe9289f1b2d5ab546a7dcf69d0bdd2f8c5e07e04fc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF2 5372 bytes
font_01_sfnt_off00007e3c.bin
959e30f5120cb54f8d82fb2360de73fe16b5bf0c1818a07426ddb71a3eff834c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3C 10012 bytes