Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0c13934fd0ab6d…

MALICIOUS

PDF

43.7 KB Authoring application: OpenOffice Draw
MD5: 29633d551a67cf271ddafc98d5371154 SHA-1: 536d758a198bf04f08c7352158576426a9b19af4 SHA-256: 1b0c13934fd0ab6d40c41a89fe616bf593bfd064429d176bbf3ad0e0165e8f45
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body is heavily corrupted and does not provide further context. The primary attack pattern appears to be a link farm designed to direct users to potentially malicious content hosted on numerous domains.

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://sigoaprendiendo.com/uploads/1/3/0/6/130639511/6173661.pdf
    • http://www.meredithemiller.com/uploads/1/3/0/2/130291874/79ee4a29c0bcf3.pdf
    • http://trevoroc.com/uploads/1/3/0/6/130604185/zikipaxawu.pdf
    • http://barndoorsbecomingyours.com/uploads/1/3/0/6/130620391/8eb2713b.pdf
    • http://www.burgersnfreys.com/uploads/1/3/0/6/130621357/lumaduxuvuje.pdf
    • http://rent2buykelowna.com/uploads/1/3/0/4/130488810/divaw_midumaba_jamovevet.pdf
    • http://apslabgroup.com/uploads/1/3/0/2/130272613/48b45bb3fbac.pdf
    • http://transparenttransformations.com/uploads/1/3/0/6/130604519/zebuxetebu_pobesutoxikovog_vufobidita_rijolozibena.pdf
    • http://pof-addcallsettings.com/uploads/1/3/0/7/130739778/8415206.pdf
    • http://rewildmedicine.com/uploads/1/3/0/6/130604666/b6ced4ab5dd.pdf
    • http://orderyourbluebook.com/uploads/1/3/0/2/130289809/2706113.pdf
    • http://picosense.com/uploads/1/3/0/5/130546354/vadozuwe.pdf
    • http://physiqueshows.com/uploads/1/3/0/4/130435755/8d7a148fdaeb.pdf
    • http://oakleafcraftshop.com/uploads/1/3/0/3/130323592/d19f41c329.pdf
    • http://socialronins.org/uploads/1/3/0/4/130483847/kalepa.pdf
    • http://arrestinglife.com/uploads/1/3/0/7/130738945/03bb76fdb69159b.pdf
    • http://boylies.org/uploads/1/3/0/4/130483348/lesakapawetozot.pdf
    • http://mail.responsiblysourced.co/uploads/1/3/0/5/130551086/xiriwudufej.pdf
    • http://becomeacontractor.com/uploads/1/3/0/5/130551925/lufaxanal.pdf
    • http://gameoveryoulose.com/uploads/1/3/0/4/130478935/xabatunawag.pdf
    • http://nobubarcelona-emea-cat.devsite-1.com/uploads/1/3/0/6/130639551/130639551.html#chronic+follicular+conjunctivitis+icd+10

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b63.bin
fb0aa08e178031fbe9efd69619245ce06a786affcd4c97d603c231be1b845523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B63 8100 bytes

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