Malicious PDF — malware analysis report

Static analysis result for SHA-256 4538626b2afb5a24…

MALICIOUS

PDF

34.5 KB Authoring application: QPDF
MD5: b69033e1d5fb35a73a6f6b51f1319743 SHA-1: 6a84c2c75f0eb4505b58dd54e8325e1c3bffb330 SHA-256: 4538626b2afb5a240cbd2d5cabd5b71b5257673263b85857053aaa6bbeae95f0
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with numerous external PDF links, suggesting a phishing or traffic redirection scheme. The document body contains a mix of seemingly random text and embedded URLs, reinforcing the idea that the document's content is not legitimate and is instead designed to host or link to malicious content.

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://nikkimichelleandthecosmiccollectivemusic.com/uploads/1/3/0/3/130313784/dowal.pdf
    • http://independentowneroperator.com/uploads/1/3/0/7/130739968/xivuge_zupepi_jifisasiganaxa_zogexi.pdf
    • http://luckyleafcannabis.com/uploads/1/3/0/8/130813973/628da2.pdf
    • http://civilsystemsinc.com/uploads/1/3/0/4/130490245/potiwabab.pdf
    • http://metrix-psy.com/uploads/1/3/0/6/130604030/1e0f7a87.pdf
    • http://burningfiddleproductions.org/uploads/1/3/0/4/130490410/kodegex.pdf
    • http://moncelebrantmarriage.com/uploads/1/3/0/6/130640066/6943847.pdf
    • http://midster.org/uploads/1/3/0/3/130324416/domatawupin.pdf
    • http://ageniart.com.au/uploads/1/3/0/5/130542968/tatixunimizobo.pdf
    • http://darklabs.co/uploads/1/3/0/4/130483638/15d1713.pdf
    • http://berea-associates.com/uploads/1/3/0/8/130814471/veluzetemuz-bejowi-sutamojetibutef-wumeduv.pdf
    • http://aliahjan.co.nz/uploads/1/3/0/4/130436390/25f2a3f43.pdf
    • http://ryetarded.com/uploads/1/3/0/2/130270956/879757.pdf
    • http://rudywalkerofficial.com/uploads/1/3/0/6/130620710/kujalirubogil-fezirixekar-powikig-digukodiwuri.pdf
    • http://mysterytomb.com/uploads/1/3/0/6/130639785/4596947.pdf
    • http://designjewelry.com/uploads/1/3/0/5/130543148/pakesenavugud.pdf
    • http://morstargar.com/uploads/1/3/0/5/130539370/tetodimuri_wovezodudunawu_popabesiniwa.pdf
    • http://6wqmbr.bdgct.com/uploads/1/3/0/7/130738789/130738789.html#blessed+be+your+name+matt+redman+mp3+free+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002be3.bin
423902b164ff8c7e6eed6cc717346a10cc2e484dd5d2a65abe389274f2d97597		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE3 7116 bytes

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