Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbe9cfacaf5e2ea…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 15:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc30196f755c5c839781bfbe5ef25310 SHA-1: bf6e407d2b17bc07a998a54c126d38e0699154d5 SHA-256: 4cbe9cfacaf5e2eaf7878bd6f88657b002896e140ff1389d94722412fab2e05e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=chocobo+racing+ff14+guide', which is flagged as malicious. This suggests the PDF is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=chocobo+racing+ff14+guide
    • http://files.vomhiddencreek.com/uploads/1/3/1/6/131606127/kukuko.pdf
    • http://wizefafur.saclegalprep.com/uploads/1/3/0/7/130738969/zivipewabib-rerepifita-gavixanasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/54638225060.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/83065960515.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/16432172391.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/maths_teacher_cv.pdf
    • https://cdn.shopify.com/s/files/1/0437/6805/3909/files/bekozexerelo.pdf
    • https://cdn.shopify.com/s/files/1/0443/8809/0022/files/deziw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdf
    • https://cdn.shopify.com/s/files/1/0434/3526/2104/files/46148602495.pdf
    • https://cdn.shopify.com/s/files/1/0431/0630/4153/files/sacroiliac_joint_exercises_for_stability_and_pain_relief.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/duporatakapatogejogixezid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/john_deere_xuv_550_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/77823598996.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_off000064ca.bin
0110c2951b7ad7f8be8c93d21699c20585def8d5af5d4e34f82479db49283662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 5256 bytes
font_01_sfnt_off000076a6.bin
1b0c7a0086c2979c064f83e015c41d365e4953e29f636ca2c330aa22358226fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A6 10256 bytes

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