Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d67016d2002601c…

MALICIOUS

PDF

37.4 KB Authoring application: Soda PDF
MD5: 2e33710a704391dfa1d2d95a0cca23ea SHA-1: 6912c653923e643f674c5e6ed857875270ef9fa6 SHA-256: 4d67016d2002601ce2f4642b329ff3bb7a610fb6336809ca7138def28d40166d
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. This technique is often used to manipulate search engine results or to host malicious content such as phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bcreativedesignandservices.com/uploads/1/3/0/6/130604336/nuniniso-lugomonek-zuraweseva.pdf
    • http://7soundenergy.com/uploads/1/3/0/4/130490221/9ca28d5c71395fd.pdf
    • http://bip.russian-travels.com/uploads/2020/01/28/1174205.pdf
    • https://gorukoxizos.weebly.com/uploads/1/3/0/4/130483153/32f28e2a06e04.pdf
    • http://palmettostarbbq.com/uploads/1/3/0/5/130589128/zageketoxunoxini.pdf
    • http://coqidiomas.com/uploads/1/3/0/2/130273850/fe715f2406ca1.pdf
    • http://sexiwu.favorsvet.com/uploads/2020/01/28/gagesewix_noviwub_zixikaziwapajif.pdf
    • http://closeandpaschalauction.com/uploads/1/3/0/6/130603931/tebatozukomorivig.pdf
    • http://feba.glistov.ru/uploads/2020/01/28/0fb082b.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/4/130483632/130483632.html#central+machinery+813b+drill+press+manual

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123f.bin
f313d0e6b09f0cb3350d395922459b8b633cc390f430bae1618ceb3bba68af5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123F 8048 bytes
font_01_sfnt_off00004ae4.bin
669a22844ddb84b64a1d93eb6147c2b8b7ca76f4316fe4be2bbf69c96252e72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE4 16180 bytes

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