Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4f8923737d3339…

MALICIOUS

PDF

53.1 KB Authoring application: OpenOffice Draw
MD5: c532a596a7b4a81b85df98e5101145ea SHA-1: f467258ea6c10da77ad608c91c6a7a848d579d83 SHA-256: 4a4f8923737d3339aafb2441af9a83b1f9bab7aad1d9e45b329325660293acca
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 poisoning or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, contains URLs that are consistent with this link-farming behavior.

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://sharoncrossman.com.au/uploads/1/3/0/4/130483767/75739671c36.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/2/130289019/2436136564be.pdf
    • http://nippersinker.com/uploads/1/3/0/3/130323291/zoreniz.pdf
    • http://livingthegoodlimelife.com/uploads/1/3/0/6/130604419/dd8544380.pdf
    • http://www.generalstoreband.com/uploads/1/3/0/6/130620757/vedekagemidaga.pdf
    • http://mikaelpettersson.net/uploads/1/3/0/3/130323182/8484845.pdf
    • http://hackerdefenseattorney.com/uploads/1/3/0/5/130550716/d855b62288.pdf
    • http://modimody.com/uploads/1/3/0/5/130589199/danojaki-tonadoseb.pdf
    • http://pixelbootcamp.net/uploads/1/3/0/6/130621135/zenoledukatali.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/6/130639549/dofumulosigoweb_dibuxados_fujegan.pdf
    • http://bearsvsbabiesgame.org/uploads/1/3/0/3/130379141/9310581.pdf
    • http://themindfulchristian.net/uploads/1/3/0/5/130539734/junigili.pdf
    • http://afuture-ahope.com/uploads/1/3/0/8/130813037/venarimibasiz-kuzos-kupapa-semawo.pdf
    • http://healthydependency.com/uploads/1/3/0/2/130289002/0652b20897f.pdf
    • http://blcabinets.com/uploads/1/3/0/4/130483847/vemesitujetodur.pdf
    • http://richfieldfoundation.org/uploads/1/3/0/3/130323733/155748.pdf
    • http://africanretreats.com/uploads/1/3/0/7/130739204/7360712.pdf
    • http://shawndgay.com/uploads/1/3/0/5/130588378/6696745.pdf
    • http://brewerybooks.com/uploads/1/3/0/3/130379178/7164467.pdf
    • http://friendsoftheyard.com/uploads/1/3/0/5/130588267/setebemuwopa.pdf
    • http://rockingtheboat.net/uploads/1/3/0/4/130483070/d965af.pdf
    • http://simplycfood.com/uploads/1/3/0/5/130550868/pidikawa-xaxeka-zabami-nagozodugoja.pdf
    • http://dedicated-8.pleasingfood.com/uploads/1/3/0/6/130604309/130604309.html#reading+passages+for+grade+4+pdf
    • http://brewerybooks.com/uploads/1/3/0/3/130379178/7164467

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001846.bin
da09b6b59088c2045eb000d358e602eca981ba16eb10a1cb2e6c967c504e41cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1846 8148 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.