Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca27c5d0ef4d233…

MALICIOUS

PDF

33.0 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 5b8d7264bccf69768e11f15c3e94b14d SHA-1: 389f143f485d9956b05b377c393a781e2014871f SHA-256: 5ca27c5d0ef4d2336cd4800688b195c2a0eb4e8a9eea85a9438c0c5e8644c089
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, directing users to numerous other PDF files hosted on various domains. This behavior is indicative of a phishing or SEO spam campaign designed to distribute malicious content or redirect users to fraudulent sites. The malformed stream length heuristic further suggests exploitation attempts within the PDF structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://www.graceandgratitudemarket.com/uploads/1/3/0/6/130640039/5042559.pdf In PDF document text
    • http://memphiscounsel.net/uploads/1/3/0/7/130775422/2484812.pdfIn PDF document text
    • http://keithnylund.com/uploads/1/3/0/6/130604430/rotujolotono.pdfIn PDF document text
    • http://artfelt.shop/uploads/1/3/0/6/130639114/disanajud.pdfIn PDF document text
    • http://top20wordpress.com/uploads/1/3/0/4/130477170/zutumapijiwelov-komizobota-nenel-jazigisusuwekak.pdfIn PDF document text
    • http://daytonconcretecontractors.com/uploads/1/3/0/6/130604180/4328696.pdfIn PDF document text
    • http://biotechoutsourcing.org/uploads/1/3/0/6/130639803/55b0f78.pdfIn PDF document text
    • http://cfautobroker.com/uploads/1/3/0/6/130603776/39e2f.pdfIn PDF document text
    • http://nettletonband.com/uploads/1/3/0/6/130604209/2954846.pdfIn PDF document text
    • http://talinaperkins.com/uploads/1/3/0/7/130739419/5b0193c5.pdfIn PDF document text
    • http://x0643993xstreamtravel.xsideas.com/uploads/1/3/0/8/130874308/130874308.html#icd+10+code+for+dysfunctional+uterine+bleedingIn 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_off00002c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C63 7344 bytes
SHA-256: 59a7cd3eb53588d367d14f968b4f769cfcc231fbda6a13441f51d7a7d04c6172

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