Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e04730509434599…

MALICIOUS

PDF

38.0 KB Created: 2020-04-06 08:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-15
MD5: 2865fd1baacd023b93a51da8b5659fb3 SHA-1: 78a343f6b5474b6d035fd4b0e44a75c5ec9bf476 SHA-256: 6e04730509434599163711941c52b60bf8faa865b5939c2dd1f966a3ac0ebb78
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a link farm or SEO manipulation tactic, potentially leading to further malicious content or phishing sites. No scripts were extracted, but the presence of numerous external links is a strong indicator of malicious intent.

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://renartcapital.com/uploads/1/3/0/6/130603889/130603889.html#regal+theatre+culver+ridge PDF link annotation
    • http://rodcloutier.rocks/uploads/1/3/0/6/130605069/jekolobejake.pdfIn PDF document text
    • http://goodtoglow.biz/uploads/1/3/0/6/130604311/kunexedukugad.pdfIn PDF document text
    • http://jacobsentape.com/uploads/1/3/0/4/130476943/pitofomaw-kebafasalok-ferisuwinajama.pdfIn PDF document text
    • http://ronstruckshop.com/uploads/1/3/0/7/130739786/e9bea9376d804a9.pdfIn PDF document text
    • http://auzmoki.com/uploads/1/3/0/5/130551922/a17a6afa2436577.pdfIn PDF document text
    • http://sebastiangardner.com/uploads/1/3/0/6/130640194/5228277.pdfIn PDF document text
    • http://saltfishandlace.com/uploads/1/3/0/7/130740175/jaliredojula-bukopejulijin.pdfIn PDF document text
    • http://freshairnutrition.com/uploads/1/3/0/7/130775856/3f687c9d5dbc7.pdfIn PDF document text
    • http://preciselymaid.com/uploads/1/3/0/6/130639837/makumezogegar_kugepu_mujekizo.pdfIn PDF document text
    • http://sdhiphopevents.com/uploads/1/3/0/8/130874533/gelapimaketajag.pdfIn PDF document text
    • http://impulsecapital.net/uploads/1/3/1/1/131163787/5238027.pdfIn PDF document text
    • http://ceruleanmanagement.com/uploads/1/3/0/7/130739452/02321dcae9a.pdfIn PDF document text
    • http://richardmaths.com/uploads/1/3/0/7/130738564/fc48b074a.pdfIn PDF document text
    • http://dustandrust.org/uploads/1/3/0/7/130776123/c25b65bcc7.pdfIn PDF document text
    • http://27waterfallsiguanamama.com/uploads/1/3/0/2/130287938/4b88a6a.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
🗂 Part of campaign: ellismgt.com 7 samples

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A0 7552 bytes
SHA-256: ae1763594f2d5a09d0baed3e1f030ea64f377a01ce5e804bade34b236c773348
font_01_sfnt_off00007534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7534 16100 bytes
SHA-256: 67cd3670ae6e342190c318dfdfd494d386a674b289d6b9f0c2dec60068b7ac9d

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