Malicious PDF — malware analysis report

Static analysis result for SHA-256 85fb6c50fa4e39ef…

MALICIOUS

PDF

37.4 KB Authoring application: LibreOffice Draw
MD5: 85c335109c23d9c8cfadfffd1a8d0767 SHA-1: 5dbdf2598e03938b9d6be716fa581b6c4a620316 SHA-256: 85fb6c50fa4e39ef53e19b1b94633c916ee15810e684d2fd75ae10551fa3429d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to distribute malicious content. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious nature of the file. The embedded URLs are likely used to redirect users to phishing sites or download further malware. 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 http://teamseoblasteo.weebly.com/uploads/1/3/0/5/130551000/58569.pdf
    • http://mercermovercompany.com/uploads/1/3/0/2/130272638/zalosujawaja_jeguvokuvesoxo_devamar_memepunedaxesug.pdf
    • https://nosamazujire.weebly.com/uploads/1/3/0/5/130550867/c277a8df7f2e1c.pdf
    • http://fibromyalgiamadesimple.com/uploads/1/3/0/4/130435988/5f03bc9.pdf
    • http://missturquoisecircuit.com/uploads/1/3/0/2/130271224/dajinegasuvopa.pdf
    • http://xubozonaw.1xbonus.info/uploads/2020/01/28/toradubuxi.pdf
    • http://abramsflooring.com/uploads/1/3/0/2/130287883/dexutivakosu.pdf
    • http://jukidisamu.sultantec.com/uploads/2020/01/28/fuvoboju.pdf
    • http://momentcapture.net/uploads/1/3/0/6/130620955/b6e3e9.pdf
    • http://thecraft2draft.com/uploads/1/3/0/4/130435694/8674f786aab318.pdf
    • http://starfishcenter.org/uploads/1/3/0/5/130551053/a20f4806391.pdf
    • http://kncompletehomeservices.com/uploads/1/3/0/5/130540937/nesojutabini.pdf
    • http://keppingerlaw.com/uploads/1/3/0/6/130621597/421706.pdf
    • http://citisecurities.in/uploads/1/3/0/5/130551586/89c79fd0a8371d.pdf
    • http://create218.org/uploads/1/3/0/5/130550898/692f1c478e8.pdf
    • http://rckrepost.online/uploads/2020/01/28/gutepomorama_rezovepukofipu_nutebubomeve_sewasijenu.pdf
    • http://ankezimmermann.ca/uploads/1/3/0/6/130621915/130621915.html#css+grid+template+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001673.bin
61415ead3ba348a430f6d34c9ae16e6d32445943c794ce5f9c40e1157c68a91b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1673 8352 bytes

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