Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30caaea6cb7f433…

MALICIOUS

PDF

29.6 KB Created: 2020-03-22 13:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 5623102f549f2c956823c6ee12a3c03e SHA-1: 6dc7184755d4e74352f9ed52dc7401385f73a328 SHA-256: d30caaea6cb7f433fddc0a6887070b85b1014fc89dff40d00b5d9604785732f9
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with 'projectwoden.com' being a dominant host. The embedded URLs point to various PDF files on different domains, suggesting a coordinated effort to redirect users. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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://culhamautosales.com/uploads/1/3/0/5/130542729/130542729.html#graco+nautilus+80+elite+user+manual PDF link annotation
    • http://projectwoden.com/uploads/1/3/0/5/130589384/15e01d.pdfIn PDF document text
    • http://www.niwawriters.net/uploads/1/3/0/5/130588345/xusupus.pdfIn PDF document text
    • http://afewof.net/uploads/1/3/0/4/130483923/7837281.pdfIn PDF document text
    • http://www.healthbyhempworx.com/uploads/1/3/0/6/130639990/puzadapu.pdfIn PDF document text
    • http://www.meghanbrady.org/uploads/1/3/0/2/130273801/kixosusuw-lepuwoboxede-detoro-loruvorijudodul.pdfIn PDF document text
    • http://hostmaster.nortonparkproperty.co.uk/uploads/1/3/0/4/130435594/5950887.pdfIn PDF document text
    • http://plyosoul.net/uploads/1/3/0/6/130621333/dizafudirolafet.pdfIn PDF document text
    • http://espaijove.info/uploads/1/3/0/6/130620751/7ffd75de7b8eee5.pdfIn PDF document text
    • http://nursingteas.com/uploads/1/3/0/6/130603852/e63ff1ecbde.pdfIn PDF document text
    • http://locationawarebooks.com/uploads/1/3/0/7/130776447/3d91b7457666.pdfIn PDF document text
    • http://neverwait.life/uploads/1/3/0/3/130379377/5351122.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
🗂 Part of campaign: espaijove.info 3 samples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E85 6844 bytes
SHA-256: 3876d62387e17c53ba7bedf1800037a21523a87b6e7227cca167a3c79cfd6ca2