Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5009ae31b65fb4…

MALICIOUS

PDF

48.7 KB Authoring application: LibreOffice First seen: 2026-05-08
MD5: 3b3706d84f6ae1e1bcb6ea6573f02113 SHA-1: 71848224e07f0853deed60fb8b0acddc98976ca3 SHA-256: 1c5009ae31b65fb40f827441cd690303a16c5e0897886d1d11d3bcb69a0d809b
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a link farm of external PDF documents, identified by the PDF_SEO_LINK_FARM heuristic. The document body text mentions 'Antivirus free trial version 180 days' and 'McAfee Internet Security serial number and license key', suggesting a phishing or scam lure. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing classification. The primary attack pattern involves directing users to download other malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ncmusictherapy.org/uploads/1/3/0/2/130273761/841992.pdf In PDF document text
    • http://dimitrovakataacademy.com/uploads/1/3/0/6/130639055/bebadisa-bivugejetagav-weraravisi-konisapo.pdfIn PDF document text
    • http://carolinedavisphotographystudio.com/uploads/1/3/0/3/130379635/1106199.pdfIn PDF document text
    • http://nwbookpro.com/uploads/1/3/0/6/130604031/dba78b2676b.pdfIn PDF document text
    • http://kristiejohnston.com/uploads/1/3/0/2/130289792/pavevuxifaf_ponosulebaxowes_bezawa.pdfIn PDF document text
    • http://thewebsterfam.com/uploads/1/3/0/4/130476859/5164a26b7.pdfIn PDF document text
    • https://fodufixetok.weebly.com/uploads/1/3/0/5/130590478/juwomerefepil.pdfIn PDF document text
    • http://priscilajamison.com/uploads/1/3/0/6/130621916/9992724.pdfIn PDF document text
    • http://massagetherapy-nyc.com/uploads/1/3/0/6/130621015/9513957.pdfIn PDF document text
    • http://steamboatevangelicalchurch.com/uploads/1/3/0/5/130550681/c7bdccc19c8.pdfIn PDF document text
    • http://mynaturalhairspa.com/uploads/1/3/0/7/130739227/130739227.html#antivirus+free++trial+version+180+daysIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1300 8880 bytes
SHA-256: 5ce6b881f56a9c9a6de1b7baf4ad67599ecbd2b2b3b4079d2e33f0e1c2c8efe3
font_01_sfnt_off00006f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F02 2652 bytes
SHA-256: 1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838
font_02_sfnt_off000077d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 16068 bytes
SHA-256: 4d884775183a85c26aba9b3dd673642af9f7218e76b13c59122748a05634ae84

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