Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b349f3d4f6e1ac7…

MALICIOUS

PDF

44.1 KB Authoring application: OpenOffice.org
MD5: a5cbd79f44e1d3575bd6f48448f64b54 SHA-1: b4def298733bbb74338d4283e0c4cd8abbf49f4c SHA-256: 2b349f3d4f6e1ac739b41bbc38b90c57bd29b88406ef6885567c89ce5c101677
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique commonly used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through these linked PDFs.

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://discordbot.pro/uploads/1/3/0/3/130313358/c208120a7b52ded.pdf
    • http://letzcook.net/uploads/1/3/0/6/130604476/teselidojedame.pdf
    • http://nspiresalonatx.com/uploads/1/3/0/2/130272440/4059266.pdf
    • http://bettereditor.net/uploads/1/3/0/5/130551231/nevowilipidilex_losit_kasibebejoxozuj.pdf
    • http://mirthrot.net/uploads/1/3/0/2/130289754/baropexegizilegukoda.pdf
    • http://homecomfortltd.com/uploads/1/3/0/6/130622047/beketovis.pdf
    • http://dillybeanscateringandcafe.com/uploads/1/3/0/6/130620626/b582f0.pdf
    • http://japanesetutorchicago.com/uploads/1/3/0/5/130551057/pusur_javagafog_zopevefalaxadat_sikekizuxixo.pdf
    • http://tobyfender.com/uploads/1/3/0/6/130639792/d2d3f.pdf
    • http://oharades.com/uploads/1/3/0/3/130323635/texegode-wewutubiwojegi-jidujezidoke.pdf
    • http://donnamalonescience.com/uploads/1/3/0/7/130738647/1479538.pdf
    • http://smarterdarter.com/uploads/1/3/0/2/130288720/giwototejenax-pazapifaluxub.pdf
    • http://www.amiccicanna.store/uploads/1/3/0/6/130603704/6366251.pdf
    • http://areyoucheatingme.com/uploads/1/3/0/7/130738555/9156057.pdf
    • http://novaruswc.com/uploads/1/3/0/4/130483572/72623.pdf
    • http://sonicsbanking.com/uploads/1/3/0/8/130814907/sasilatarefon.pdf
    • http://aguado-family.rominastiebenphotography.com/uploads/1/3/0/5/130550992/kixuzeja_firujis_razavejepeke.pdf
    • http://kdconstructionllc.net/uploads/1/3/0/6/130620843/257ff66ff2cf9.pdf
    • http://pusulaharita.net/uploads/1/3/0/6/130621439/b32356042.pdf
    • http://xruca0.salon225.com/uploads/1/3/0/4/130436224/130436224.html#canmat+depression+guidelines+2018
    • http://japanesetutorchicago.com/uplo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000042c2.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42C2 2600 bytes
font_01_sfnt_off00004e46.bin
ea8f766bc35a65675f0455ce1ef5a466c99bff923f4f36695352a1e5d0e8bb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E46 7736 bytes

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