Malicious PDF — malware analysis report

Static analysis result for SHA-256 97cf1af82dc0b4fe…

MALICIOUS

PDF

40.4 KB Authoring application: Pdftk
MD5: cfe1170b82093c738c5f923e61eac3d9 SHA-1: 05a5c78c768064de3e6f88f07f9aa816702c0507 SHA-256: 97cf1af82dc0b4fe853bad1671022ff8a97a18e42085f2b87f151ecb70a6a5e1
150 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, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or traffic-driving intent. The document body contains irrelevant text and URLs, reinforcing the idea that the primary function is to host these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://jezivaku.vipiski-besplatno13.icu/uploads/2020/01/29/e46d3b3a4bfedb.pdf
    • http://afcointl.com/uploads/1/3/0/4/130483412/fe1146891c89.pdf
    • http://kinzerfarms.com/uploads/1/3/0/4/130489132/wiriraruzewolowo.pdf
    • http://tofojojeb.specteh-76.ru/uploads/2020/01/29/658045.pdf
    • http://ashleighvaillancourt-winebrenner.com/uploads/1/3/0/5/130590464/4c0a5e214dd.pdf
    • http://mirrormirrorministries.com/uploads/1/3/0/3/130379527/3811b7c.pdf
    • http://nomoremondays.us/uploads/1/3/0/4/130483989/4cf736201a25e3d.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/2/130272406/zarulaj.pdf
    • http://helmsworkshops.com/uploads/1/3/0/4/130489157/3a50eb.pdf
    • http://4gkingdomliving.com/uploads/1/3/0/5/130588475/3038314.pdf
    • http://nandrews.net/uploads/1/3/0/6/130605376/828434.pdf
    • http://bazargardi.com/uploads/1/3/0/4/130477490/130477490.html#gta+vice+city+cheats+pc+mission+%C3%BCberspringen

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012f7.bin
8dd328ef492aeaacb7eabe0eea4a666dc32decbf637523882e08a55ac1945692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7 8464 bytes

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