Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe47167dbf05b427…

MALICIOUS

PDF

43.9 KB Created: 2020-03-24 19:12:57 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 9579bedc28f547a95d4affea6962129d SHA-1: f0a3d97d232a584e3d1b6d980fddbecb98c7a88b SHA-256: fe47167dbf05b427eba31f041060567d5f8ec918138fc241dc14e4937113d111
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to 'book pdf' and includes URLs that appear to be part of this link farm. The primary attack pattern is likely to trick users into visiting these links, which could lead to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://4gen4.org/uploads/1/3/1/0/131071043/131071043.html#emma+jane+austen+book+pdf PDF link annotation
    • http://hostmaster.yvettehughes.com.au/uploads/1/3/0/5/130543685/sopes.pdfIn PDF document text
    • http://sailfishchair.com/uploads/1/3/0/4/130483087/857234.pdfIn PDF document text
    • http://plumbercovingtonla.com/uploads/1/3/0/7/130775883/lizavulerovisoviliko.pdfIn PDF document text
    • http://mousingarounddisney.com/uploads/1/3/0/5/130540554/davino.pdfIn PDF document text
    • http://lectricwind.com/uploads/1/3/0/5/130542813/tilojulozukurama.pdfIn PDF document text
    • http://stewardshiphomes.org/uploads/1/3/0/7/130738917/zezonem.pdfIn PDF document text
    • http://babakumisalwaini.com/uploads/1/3/0/7/130739974/d470dd.pdfIn PDF document text
    • http://prorighty.com/uploads/1/3/0/7/130776386/nudovikug_gesesi.pdfIn PDF document text
    • http://www.855review5.com/uploads/1/3/0/4/130488401/vifixukade.pdfIn PDF document text
    • http://leiko.org/uploads/1/3/0/4/130488163/lenurogumiris_fodamizew_vuwipijobobar.pdfIn PDF document text
    • http://dopeshoppingmadeeasy.com/uploads/1/3/0/5/130542924/resan-gepolide.pdfIn PDF document text
    • http://samuelprovencher.net/uploads/1/3/0/5/130588762/fipexixuba.pdfIn PDF document text
    • http://silverbehavioralhealth.org/uploads/1/3/0/6/130604615/a6c03e1da8088d.pdfIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 8244 bytes
SHA-256: 8113947cd75edd8b862b01c92e8ff2206f167c7e333d52766ada3c3b0ed915ad
font_01_sfnt_off00008d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4A 16104 bytes
SHA-256: 0a97bde9752fdee1f3e7370c79030bd93fe90b264c0961419b1ed7afc578e67c