Malicious PDF — malware analysis report

Static analysis result for SHA-256 8668e76b9f85e16c…

MALICIOUS

PDF

58.2 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 0c0544a3030a8ed2f697ab3eb5365100 SHA-1: e82d01781d6c9c3ab55a581b56bee1c6e686170a SHA-256: 8668e76b9f85e16c081153fcd8a3344f229fe3373ce3889a4c70cffb85883870
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall'. While no scripts were extracted, the sheer volume of linked PDFs suggests a coordinated effort to distribute further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://albemarleop.com/uploads/1/3/0/5/130551704/da8424.pdf In PDF document text
    • http://kiscogear.com/uploads/1/3/0/4/130476172/3885503.pdfIn PDF document text
    • http://landforsaleinlafayettecountyms.com/uploads/1/3/0/4/130491488/9efdd3.pdfIn PDF document text
    • http://pvstateofmind.net/uploads/1/3/0/4/130476462/039d1.pdfIn PDF document text
    • http://aplacetorest.org/uploads/1/3/0/3/130323164/bidajemopi.pdfIn PDF document text
    • http://berenson.us/uploads/1/3/0/3/130379074/9608498.pdfIn PDF document text
    • http://whiddenprinting.com/uploads/1/3/0/4/130488228/deviwotamire_vifuwagap_vilenidigo_nematebe.pdfIn PDF document text
    • http://andrewthompsonsongs.com/uploads/1/3/0/2/130289243/juwemavivunep.pdfIn PDF document text
    • http://sgdpress.com/uploads/1/3/0/7/130739347/9ba370f013e39.pdfIn PDF document text
    • http://topcabletvdeals.com/uploads/1/3/0/7/130739584/supepiwet-rawub.pdfIn PDF document text
    • http://mygabrielagarcia.com/uploads/1/3/0/4/130476351/lutafuxuwareb.pdfIn PDF document text
    • http://keekswineco.com/uploads/1/3/0/8/130873932/74f232.pdfIn PDF document text
    • http://richardeturley.com/uploads/1/3/0/7/130776343/sifisulifixo.pdfIn PDF document text
    • http://pioneerwinecolorado.com/uploads/1/3/0/3/130312965/7505757.pdfIn PDF document text
    • http://skulldiver.com/uploads/1/3/0/3/130323967/vuwiwatupiv.pdfIn PDF document text
    • http://insituexperiences.com/uploads/1/3/0/7/130776612/monokam-varizopexakamid-sidol.pdfIn PDF document text
    • http://haileysavestheday.com/uploads/1/3/0/5/130545581/73449dbebf11.pdfIn PDF document text
    • http://queblesolutions.com/uploads/1/3/0/7/130739895/dfe04c.pdfIn PDF document text
    • http://mindbody-solutions.net/uploads/1/3/0/6/130639855/torubage.pdfIn PDF document text
    • http://agilicorp.com/uploads/1/3/0/5/130590569/0814c54ea5.pdfIn PDF document text
    • http://teenmamagrown.com/uploads/1/3/0/7/130740389/1201213.pdfIn PDF document text
    • http://cairokhanhotel.net/uploads/1/3/0/2/130287896/newimisufi-kadevavesusosox-najos.pdfIn PDF document text
    • http://singaporenewexecutivecondo.com/uploads/1/3/0/5/130589064/mazijenir.pdfIn PDF document text
    • http://taxi101.com/uploads/1/3/0/7/130739500/2108060.pdfIn PDF document text
    • http://lanceduncan.com/uploads/1/3/0/9/130969931/9577028.pdfIn PDF document text
    • http://kmipropertieslimited.com/uploads/1/3/0/6/130639162/130639162.html#inferior+wall+infarction+nitroglycerinIn 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_off00001539.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1539 9112 bytes
SHA-256: cec6604d26823073f98e0ced41390c7eb3f3d930eb78c180c8b723d10d2d08e5

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