Malicious PDF — malware analysis report

Static analysis result for SHA-256 291145056102d37f…

MALICIOUS

PDF

34.2 KB Authoring application: LibreOffice
MD5: c2cdb66e26365cbe12320ec9140def0a SHA-1: b8df43af97ddd5096b78da74aa8c20982dc4401b SHA-256: 291145056102d37fec6bf08c26cfbc3e934b2e949702e2de31d73e000c963f1c
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The primary indicator is the presence of a large number of embedded external links, a technique often used in phishing campaigns to redirect users to malicious sites. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather as a container for these links.

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://strwbry.io/uploads/1/3/0/7/130740262/4743706.pdf
    • http://discovercaddogap.com/uploads/1/3/0/7/130775380/gexubowipavutiz.pdf
    • http://fairvotepiercecounty.com/uploads/1/3/0/5/130543279/kapasapo.pdf
    • http://annpiquette.com/uploads/1/3/0/4/130476880/a3d4930e11.pdf
    • http://act33guaranteed.com/uploads/1/3/0/5/130550983/vuxagu.pdf
    • http://atlantalandlordservices.com/uploads/1/3/0/5/130551599/c9842ccb6d.pdf
    • http://mostyg.com/uploads/1/3/0/2/130270980/2af19481c228.pdf
    • http://mmjbookkeeper.com/uploads/1/3/0/8/130813132/e0ed20aaa970.pdf
    • http://cardinaltranscribing.com/uploads/1/3/0/5/130550895/41abbb238.pdf
    • http://cobleskillcollegerentals.com/uploads/1/3/0/7/130775229/pujabajefipibof-godeme.pdf
    • http://notsowired.info/uploads/1/3/0/3/130379894/064113d9c80.pdf
    • http://mercywilder.com/uploads/1/3/0/6/130640091/f79c69.pdf
    • http://remoteworktech.com/uploads/1/3/0/5/130590008/gixugun_soxisaxaxon_jitopuko_nukusotexasot.pdf
    • http://mywholelifeisshirts.com/uploads/1/3/0/5/130588214/dazixemisatema.pdf
    • http://allanhoward.com/uploads/1/3/0/8/130815437/gudajiserujofodarub.pdf
    • http://coutureeatz.com/uploads/1/3/0/7/130738859/gerizamimikejuku.pdf
    • http://researchonunitedstates.com/uploads/1/3/0/5/130588287/9318634.pdf
    • http://wedicyl.store/uploads/1/3/0/7/130775088/gevanux_tejigidadofe_pajowobub_bosowoped.pdf
    • http://crapradio.net/uploads/1/3/0/3/130313410/tiforukuralowade.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/5/130550925/50ba43c08a.pdf
    • http://ne-surgerycenter.net/uploads/1/3/0/7/130776082/130776082.html#english+listening+skills+british+council

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000027fd.bin
45c73906b924fbf3d29994dbd83f783704e7763d0b0b0ccc607884fbdd5d2d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x27FD 7088 bytes

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