Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d05017a2dd85ef9…

MALICIOUS

PDF

39.0 KB Authoring application: Scribus
MD5: c483ffc57354590f1649789e56123fcf SHA-1: 093d84b0fb0f67c7b3c8590412969095e2bf9ae2 SHA-256: 8d05017a2dd85ef9acc52ad9d8f5ce8622f06c0156ab7adbba669cd3849c407b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains hosting PDF files. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as Pdf.Phishing.TtraffRobotInstall. The document body, though truncated, suggests a lure related to sheet music, which is likely a pretext to drive traffic to the malicious URLs. No scripts were extracted from this sample.

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://mytaskassistant.us/uploads/1/3/0/7/130739938/5fdc278.pdf
    • http://hvzaction.com/uploads/1/3/0/6/130604264/cbad6394411.pdf
    • http://stickycodeit.com/uploads/1/3/0/2/130271017/lowisojetepeta.pdf
    • http://desvioindefinido.com/uploads/1/3/0/5/130543784/3588469.pdf
    • http://treymoore.net/uploads/1/3/0/7/130776640/8130817.pdf
    • http://www.ungfrivillig.no/uploads/1/3/0/3/130313213/noloj.pdf
    • http://myrnaphillips.com/uploads/1/3/0/5/130539923/ragivu_gojavupena_nabegurusiti.pdf
    • http://elizabethgoldsteinphd.com/uploads/1/3/0/3/130323335/zilagemozaleg.pdf
    • http://hostmaster.friendsofmargampark.co.uk/uploads/1/3/0/2/130288455/jidumeb.pdf
    • http://canuplaysports.com/uploads/1/3/0/6/130639477/gobiseb.pdf
    • http://shellynorris.shellysrockshop.com/uploads/1/3/0/5/130550903/rizajimigeneli_dufuwozoge_vinapigubet_xososax.pdf
    • http://nusgss.org/uploads/1/3/0/7/130739369/jegeduxekaku_negefidowive.pdf
    • http://repairplumberfortworth.net/uploads/1/3/0/8/130813077/9749508.pdf
    • http://petroleumconsultingservices.com/uploads/1/3/0/8/130874297/rekugevi-vopawev-bimenudemu-gusaxugekuriw.pdf
    • http://noodlecontent.com/uploads/1/3/0/8/130814594/6062a5fd06dff7.pdf
    • http://terisherbs.com/uploads/1/3/0/8/130813917/d57ecd7de.pdf
    • http://lacollectiva.org/uploads/1/3/0/7/130776740/nekup_tolodesem_ramigeroxatotub.pdf
    • http://www.fiddleheadgardenservices.com/uploads/1/3/0/4/130483275/9cbe0bda4f.pdf
    • http://saintjohnsmilton.org/uploads/1/3/0/4/130488308/jabivabuxopuwewagoxi.pdf
    • http://www.alexandralewisphotography.com/uploads/1/3/0/5/130544898/8a0ff6.pdf
    • http://caleb123.com/uploads/1/3/0/4/130483819/dunawikewaz.pdf
    • http://securities-lawyer.us/uploads/1/3/0/6/130621686/8861083.pdf
    • http://dogma531.com/uploads/1/3/0/4/130483319/e0fd7c27.pdf
    • http://www.iroomonline.com/uploads/1/3/0/7/130775588/rorebamameti_nexel_kanabi.pdf
    • http://9vvk.brdge.org/uploads/1/3/0/6/130621840/130621840.html#a+thousand+years+sheet+music+pdf+free
    • http://mytaskassistant.us/uploads/1/3/0/7/130739938/5

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000336a.bin
9247cee21820e41230c04af2f08051b37b8686d141947b07f0e7ed8f4570e322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x336A 9076 bytes

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