Malicious PDF — malware analysis report

Static analysis result for SHA-256 9444c8b392d00a59…

MALICIOUS

PDF

41.4 KB Authoring application: Solid Converter PDF
MD5: c84fb14467fc7dfe5b4fdbf29cf09c20 SHA-1: 726d6cd8e3d6ad7c5c7e3b4d98fd7b9297a85ca9 SHA-256: 9444c8b392d00a599097affd57dfb09dcae52ccc8fb7c73bfd600200054df3f6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. No scripts were extracted, and the document body is heavily obfuscated and truncated, preventing a more detailed analysis of the specific lure.

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://www.wandagovanjenkins.com/uploads/1/3/0/5/130588435/166fd9e49e.pdf
    • http://nivafoundation.com/uploads/1/3/0/7/130775859/fiwafefuvuz.pdf
    • http://charlesriverrowingcamps.com/uploads/1/3/0/7/130739336/wusaxiragixo-bukawa-jubapimapinu.pdf
    • http://passionateleecurious.com/uploads/1/3/0/4/130476152/detipujuto.pdf
    • http://zoombuyz.com/uploads/1/3/0/6/130639966/nakupasadagenosesel.pdf
    • http://swellbathrooms.com/uploads/1/3/0/6/130621483/natawovivesugin_narenukelefal_wusugi.pdf
    • http://babiesbreath.com.au/uploads/1/3/0/4/130488698/84bfa6bd223.pdf
    • http://www.creativedistinction.com.au/uploads/1/3/0/2/130272977/sorexebofaxunadowu.pdf
    • http://www.ipleaseyoutease.com/uploads/1/3/0/2/130291527/nefepabekerupenar.pdf
    • http://konect2us.com/uploads/1/3/0/6/130620745/sekovoluvojo.pdf
    • http://bestsellersdeal.nl/uploads/1/3/0/7/130775299/6287850.pdf
    • http://webdisk.krabi.fi/uploads/1/3/0/6/130605270/rifisarafavinogakez.pdf
    • http://ppiconstructioncorp.com/uploads/1/3/0/4/130476830/waniwinofe-xozojitu-nerip.pdf
    • http://heritagetreeservice.com/uploads/1/3/0/6/130605228/9c4e9.pdf
    • http://sarahs-flowers.com/uploads/1/3/0/5/130550738/c15a1457fb68c.pdf
    • http://www.ofiteccbtis102.com/uploads/1/3/0/7/130776536/kojizoziveje_lojipe.pdf
    • http://nadeko.org/uploads/1/3/0/6/130620715/c6f5ec4.pdf
    • http://host3.carmichaelnl.com/uploads/1/3/0/6/130639903/130639903.html#pronombres+personales+y+posesivos+en+ingles
    • http://passionatelee

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b1d.bin
dead277f62a9a406f7ec53b27ca75f6d686c4991be1af6987819e378622ac820		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1D 16064 bytes
font_01_sfnt_off000042e9.bin
08b58db6f3dc42104af35b5880c6f94e36ed4b0068558bf489ad0ab9c8b1c34a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42E9 9048 bytes

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