Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a07c5ef623075e4…

MALICIOUS

PDF

43.1 KB Authoring application: OpenOffice.org First seen: 2020-09-24
MD5: bace2057063ecfbef78abc0d14d17da4 SHA-1: db231e626108e733db3f8035e405c70a6a762124 SHA-256: 8a07c5ef623075e4aa1493c25d7164058b8c8de0ba2e8d38c2e7439420721f28
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, with the primary domain being keyofkaye.com. The document body contains garbled text, suggesting it is not intended for human consumption but rather as a vehicle for the embedded links. The primary attack pattern involves directing users to a vast network of external PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://keyofkaye.com/uploads/1/3/0/7/130776221/5653812.pdf In PDF document text
    • http://astoryofsplendor.com/uploads/1/3/0/2/130289171/danelamegoxubi_poruzijolot.pdfIn PDF document text
    • http://mondokdentalmexico.com/uploads/1/3/0/5/130542875/29ffd0.pdfIn PDF document text
    • http://prettylittlewaistline.com/uploads/1/3/0/5/130542829/bexavo.pdfIn PDF document text
    • http://peakrescue.com/uploads/1/3/0/6/130603979/funibaki_toxobizerugil_wumuwotipa_bakakumiz.pdfIn PDF document text
    • http://www.dbtinsf.com/uploads/1/3/0/2/130270902/96e4c10f4734727.pdfIn PDF document text
    • http://norfolkeyephysiciansandsurgeons.com/uploads/1/3/0/7/130740464/3b3529932.pdfIn PDF document text
    • http://thecreekboutique.net/uploads/1/3/0/6/130604425/9b627054.pdfIn PDF document text
    • http://angiemoll.com/uploads/1/3/0/6/130639635/retatijo-gobosuvew.pdfIn PDF document text
    • http://buyasianart.com/uploads/1/3/0/5/130541641/1374705.pdfIn PDF document text
    • http://yq-wine.com/uploads/1/3/0/6/130620314/8121843.pdfIn PDF document text
    • http://vegasvoicelessons.com/uploads/1/3/0/7/130739540/8eb0674cdc51.pdfIn PDF document text
    • http://brushscription.com/uploads/1/3/0/6/130605420/5d87cf64.pdfIn PDF document text
    • http://olares.com/uploads/1/3/0/6/130620965/2303872.pdfIn PDF document text
    • http://ptechr.com/uploads/1/3/0/6/130621552/bejezilaselatugodape.pdfIn PDF document text
    • http://jointforcestrainingacademy.com/uploads/1/3/0/4/130483147/5648472.pdfIn PDF document text
    • http://engineerweekly.com/uploads/1/3/0/7/130740466/bdf676f2766f4.pdfIn PDF document text
    • http://mail.avian.dk/uploads/1/3/0/2/130272396/4a74ce9b29b16a5.pdfIn PDF document text
    • http://fatfightingmom.com/uploads/1/3/0/2/130291531/midafusizedapolodugi.pdfIn PDF document text
    • http://landforsaleinlafayettecountyms.com/uploads/1/3/0/4/130483349/pelaxo.pdfIn PDF document text
    • http://agriturismoariafina.com/uploads/1/3/0/6/130621607/xoziwifur.pdfIn PDF document text
    • http://findmoreroom.com/uploads/1/3/0/2/130287991/zokatege.pdfIn PDF document text
    • http://www.dianaconstruction.com/uploads/1/3/0/4/130476468/5585454.pdfIn PDF document text
    • http://dogsofthedowapp.com/uploads/1/3/0/4/130477702/jofenorononif-tomelima-bipofadot-kametemujax.pdfIn PDF document text
    • http://nzbcool.com/uploads/1/3/0/4/130476122/dixuwibowono.pdfIn PDF document text
    • http://29.bpmtc.com/uploads/1/3/0/5/130550895/130550895.html#ayurvedic+treatment+for+bulging+disc+in+lower+backIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000441e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x441E 8076 bytes
SHA-256: fb739920b03d31f98d6c802f94a8c96f8f7399a50353c5efc5889ce40317c481

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