Malicious PDF — malware analysis report

Static analysis result for SHA-256 88dd1eb94b1cb5b2…

MALICIOUS

PDF

35.3 KB Authoring application: SWFTools First seen: 2020-09-24
MD5: cb1936e6f7fee13c9c444ba3761fbc1b SHA-1: de59b4164f217eaef71d1ad900fb82232110496c SHA-256: 88dd1eb94b1cb5b2f512c4922a580e5d3a6a009c3d4f757ec4eb7cd23976cd93
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links to external PDF files, a technique often used to create SEO link farms or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://mta-sts.mx.dragansutic.com/uploads/1/3/0/3/130323210/norerebunarejijide.pdf In PDF document text
    • http://southerncrossland.com/uploads/1/3/0/6/130620573/vupubuve.pdfIn PDF document text
    • http://mstsrv11.mst.systech.ch/uploads/1/3/0/5/130543310/vexam.pdfIn PDF document text
    • http://jaxrenovationservicesllc.com/uploads/1/3/0/2/130289247/7960802.pdfIn PDF document text
    • http://gerrardphotography.com/uploads/1/3/0/4/130435516/tiviluvabawaleko.pdfIn PDF document text
    • http://www.porterterrylaw.com/uploads/1/3/0/6/130620509/4670188.pdfIn PDF document text
    • http://katyandlincoln.com/uploads/1/3/0/7/130776254/dudisejixakogib.pdfIn PDF document text
    • http://michaudwellness.com/uploads/1/3/0/6/130622077/movowapafurenaluk.pdfIn PDF document text
    • http://newpathorg.com/uploads/1/3/0/4/130488969/daligiwekepotu.pdfIn PDF document text
    • http://mymoneybuilder.net/uploads/1/3/0/8/130814673/156273.pdfIn PDF document text
    • http://www.codsn.com/uploads/1/3/0/5/130542773/f7d12.pdfIn PDF document text
    • http://masonrystonework.com/uploads/1/3/0/6/130640116/koguzaruwep_daxapavepes.pdfIn PDF document text
    • http://bluemountainsanimalrehabcentre.com/uploads/1/3/0/6/130604688/305828.pdfIn PDF document text
    • http://www.noccassoc.org/uploads/1/3/0/6/130639855/a3b7efe52.pdfIn PDF document text
    • http://aplc-nj.org/uploads/1/3/0/8/130874238/8311145.pdfIn PDF document text
    • http://lists.accordionapocalypse.com/uploads/1/3/0/7/130775229/130775229.html#java+projects+with+source+code+using+netbeansIn PDF document text

Related samples 2

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_off00002ea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA0 8124 bytes
SHA-256: e6f7ba42c065410af6beee59eeb3cb33861db4f3586453216f7288268f8782d6

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