Malicious PDF — malware analysis report

Static analysis result for SHA-256 9752ae76fd7a57e2…

MALICIOUS

PDF

50.6 KB Created: 2020-12-02 22:17:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0c192cda0c756302ca3193e4d1448770 SHA-1: 519507079059a7c7e8dde8ed03e68276385ec427 SHA-256: 9752ae76fd7a57e28af5f3d59b227f8d544c81590b1dd0909994976ac8a6d923
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains keywords related to integration and functions, likely used as a lure. The presence of a link farm and a critical ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7738

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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=chain+rule+integration+trig+functions
    • https://cdn-cms.f-static.net/uploads/4447916/normal_5fa7fdd264cb5.pdf
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/rusigere_tizasol_gelimovazupef.pdf
    • https://cdn-cms.f-static.net/uploads/4386073/normal_5faa02991ca1d.pdf
    • https://cdn-cms.f-static.net/uploads/4462093/normal_5fbb505138c5a.pdf
    • https://cdn-cms.f-static.net/uploads/4490380/normal_5fb5ecf310720.pdf
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/81978dc9.pdf
    • https://tumogifizutuvo.weebly.com/uploads/1/3/4/5/134527103/318c0cb7d.pdf
    • https://cdn-cms.f-static.net/uploads/4451757/normal_5fb80e5008448.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1c5519b3-e8ff-4773-baf6-0982600f929e/gaxewitek.pdf
    • https://uploads.strikinglycdn.com/files/234f85af-efef-4f65-bf26-1f50fe576be9/26192789924.pdf
    • https://uploads.strikinglycdn.com/files/f6eaf6f9-ef7d-4f17-82c3-8af350a4a123/tarkus_and_bruford.pdf
    • https://uploads.strikinglycdn.com/files/b112e40a-0e42-4b4e-a847-29ed1adbcab5/venn_diagram_printable.pdf
    • https://uploads.strikinglycdn.com/files/040aa184-1bb2-484f-b4cb-731a206201f3/18926854171.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc46.bin
4191958a629dcda7d222dca030ea220d89be58f4d0bc7a9fb83623a760490911		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC46 5048 bytes

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