Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c8f817018d5775d…

MALICIOUS

PDF

38.9 KB Authoring application: OpenOffice.org
MD5: f922229931a521a7003eca9457c422d7 SHA-1: de658ac95800af25b90b2cb65c396cd4a4a82307 SHA-256: 5c8f817018d5775d7f49b8258a3a492dad7d43e246b9967084cd76afaac5cc4b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links likely serve as a link farm, aiming to redirect users to malicious sites. The ClamAV detection and ML classifier further support its malicious nature, indicating it is likely a phishing or malware distribution lure.

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://tmariephotography.net/uploads/1/3/0/7/130776022/49b868.pdf
    • http://mrcalebbullock.com/uploads/1/3/0/2/130273893/lalilu-vuvogiteku.pdf
    • http://www.wileyeasd2019.com/uploads/1/3/0/6/130639436/vivudebewu.pdf
    • http://navarrepenthouse.com/uploads/1/3/0/4/130488311/3608253.pdf
    • http://newrisestrategy.com/uploads/1/3/0/7/130775865/51d2bfcb.pdf
    • http://wewantcoolstuff.com/uploads/1/3/0/3/130323581/lewim.pdf
    • http://hausofspeed.com/uploads/1/3/0/6/130604512/54cd26d6f4.pdf
    • http://changlefangyulechengwanbaijiale.f18.ebkf.org/uploads/1/3/0/3/130379083/kixigesolopube.pdf
    • http://baysidepersonnel.net/uploads/1/3/0/2/130291702/tawujiwebofaza.pdf
    • http://www.rwbsj.net/uploads/1/3/0/7/130775750/7337484.pdf
    • http://jasper-marianek.biz/uploads/1/3/0/8/130814513/mazidixavoj.pdf
    • http://agslist.com/uploads/1/3/0/2/130271207/tinibakiwi.pdf
    • http://hostmaster.cbheatingbristol.co.uk/uploads/1/3/0/2/130272424/rapezivilupew.pdf
    • http://poptailsforyou.com/uploads/1/3/0/5/130544694/tepujusumob.pdf
    • http://mexicofolk.net/uploads/1/3/0/5/130588451/gewotijo-fivolaxozupurig.pdf
    • http://babyphoton.com/uploads/1/3/0/6/130621202/tezubivefi.pdf
    • http://beaniesshoerepair.com/uploads/1/3/0/7/130739732/d4cb25b9ab1e.pdf
    • http://je-riley.com/uploads/1/3/0/6/130604756/2110650.pdf
    • http://homeprosrus.com/uploads/1/3/0/7/130738752/kabosoxojifivi.pdf
    • http://www.max-rutter.co.uk/uploads/1/3/0/3/130323355/tidulunogeguv.pdf
    • http://ranchonicholls.com/uploads/1/3/0/5/130588597/jorubivin_kemeduluk_tukidilepigigam.pdf
    • http://mx.lotpartyshow.com/uploads/1/3/0/2/130272080/a5597263ed90c.pdf
    • http://www.familymeeting2019.com/uploads/1/3/0/9/130969358/vubevu.pdf
    • http://michaelshusko.com/uploads/1/3/0/8/130874278/130874278.html#hydrocortisone+for+septic+shock+dose

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035a8.bin
0bf18607ddddd427f24e4d78478197a547e40e804d5f8627d9f67bb22dd32718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x35A8 8088 bytes

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