Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df2712840e15846…

MALICIOUS

PDF

52.9 KB Created: 2020-03-24 07:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-07
MD5: 16860d5f976a12142ad8f1a665e18bb5 SHA-1: a6b1c04b5607b7088eb8aad6a90d81c6850920ba SHA-256: 7df2712840e1584642bb47f059ef919e323719a451b53ae9fa691ac65633a183
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files with numeric slugs, indicating a potential link farm or SEO manipulation scheme. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of numerous external URLs suggests an attempt to redirect the user to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://bbpapaveri-e-papere.com/uploads/1/3/0/6/130605421/130605421.html#descargar+peliculas+de+barbie+gratis+en+espa%C3%B1ol+completas PDF link annotation
    • http://spennconrail.com/uploads/1/3/0/5/130588865/jiwumu-pumeju-jebagaru-numevamo.pdfIn PDF document text
    • http://www.puffdragan.co.uk/uploads/1/3/0/2/130287506/63bb78a0d47abeb.pdfIn PDF document text
    • http://kevinaxx.com/uploads/1/3/0/6/130621206/1562449.pdfIn PDF document text
    • http://randyslounge.com/uploads/1/3/0/5/130589077/8108305.pdfIn PDF document text
    • http://mta-sts.mx.cypresswoodspetcrematory.com/uploads/1/3/0/2/130272631/7f0372.pdfIn PDF document text
    • http://credenceadvisory.org/uploads/1/3/0/6/130620747/6487454.pdfIn PDF document text
    • http://gretcheneveretthardwareandhome.com/uploads/1/3/0/6/130620313/acacb103c.pdfIn PDF document text
    • http://thisisthehype.com/uploads/1/3/0/7/130775366/4748149.pdfIn PDF document text
    • http://thekingdumb.com/uploads/1/3/0/2/130289441/3318408.pdfIn PDF document text
    • http://longhorncaverns.co/uploads/1/3/0/5/130588509/34679.pdfIn PDF document text
    • http://litem.net/uploads/1/3/0/2/130273842/rovofazepax-nopotabawu.pdfIn PDF document text
    • http://plumbingsantaclarita.net/uploads/1/3/0/5/130551132/2b1e418bcc4.pdfIn PDF document text
    • http://morristileva.com/uploads/1/3/0/6/130639152/5fca85ed44d8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6094 6444 bytes
SHA-256: 1957428794578a072b8983e864e5701b52391162abfb2d6d14c6295fa8a16687
font_01_sfnt_off00007056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7056 8384 bytes
SHA-256: b1f8b2dd9f63738457e8033d555f7f0df4e8eb59ca890b8878f37bed100c3024
font_02_sfnt_off00008f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F13 2732 bytes
SHA-256: 50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3
font_03_sfnt_off000098aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AA 4868 bytes
SHA-256: f6673f5733dc8d045aa2920187775bd5043727a39b447105fc8e8032f1339a7a
font_04_sfnt_off0000a9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9D8 17080 bytes
SHA-256: e8886f61ae851d38ffc48ea642994614862ccb3c57a59051a35d7ffc9edb78ab

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