Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9cfd8887688ae69…

MALICIOUS

PDF

35.1 KB Authoring application: Pdftk
MD5: 3c024778f66921398c8553bff3aec1b9 SHA-1: 491a9e6b72204ca4c5141d341ab184ffb127d894 SHA-256: f9cfd8887688ae6902fc7ec5d4bff5915a2a04615028d8ced291a3c4da0331d6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely related to phishing or traffic redirection. The document body contains text related to 'in kind donations' and IRS guidelines, which is a common lure for phishing attacks. No scripts were extracted from this sample.

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 https://gasotuxomiref.weebly.com/uploads/1/3/0/5/130542982/nogafojawapin_nalokat_norulaxe_sirufekido.pdf
    • http://dhananjaipai.weebly.com/uploads/1/3/0/6/130604125/paxisitonigelewufawi.pdf
    • http://rbminterests.com/uploads/1/3/0/2/130287960/3a6b411e53.pdf
    • http://gurabosete.nasdwkas.icu/uploads/2020/01/28/fidisoki_zafuzimagil_surawinirebiwe.pdf
    • http://vuzavo.bottinnok.xyz/uploads/2020/01/27/jiwuv.pdf
    • http://jibi.feierverkspb.ru/uploads/2020/01/27/236f17e6a0d01e2.pdf
    • http://northbrisbanebutcher.com/uploads/1/3/0/5/130543761/viteje-japafewuzim-noseg-bewewusanekoji.pdf
    • https://tezajelevikik.weebly.com/uploads/1/3/0/5/130550690/kesejove.pdf
    • http://charlesfoto.net/uploads/1/3/0/3/130379583/negujafozujefuv-puxutujumo-vekovet-jawele.pdf
    • http://veronicaasorey.com/uploads/2020/01/29/d719a7.pdf
    • http://ninaceledonio.com/uploads/1/3/0/3/130313262/130313262.html#in+kind+donations+irs+guidelines

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012fe.bin
3c5bebd2f083c917cc7351f1dfb03b88f75755f764cb41e50cd3ba7a111289a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE 7912 bytes

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