Malicious PDF — malware analysis report

Static analysis result for SHA-256 d745589db80a4eea…

MALICIOUS

PDF

43.2 KB Created: 2020-04-07 06:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 802c15b3170445eda8083b09a16ad1b6 SHA-1: ba3a270383c90d584ec9b47557da793bdb524d0c SHA-256: d745589db80a4eea22c61db3c003695288ad32ef500013538661afb4c2eceee2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains the title 'Como solicitar un amparo de pobreza' and references to wkhtmltopdf, suggesting a lure. The primary intent appears to be directing users to a network of linked websites, likely for SEO manipulation or to serve further malicious content.

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://haugaardvin.com/uploads/1/3/0/5/130546076/130546076.html#como+solicitar+un+amparo+de+pobreza PDF link annotation
    • http://bullsnips.com/uploads/1/3/0/7/130739836/8801092.pdfIn PDF document text
    • http://lusciouslucyplumpmmmjuicy.vip/uploads/1/3/0/8/130874285/f557cbe0e6051e.pdfIn PDF document text
    • http://mitacoponchos.com/uploads/1/3/0/6/130620946/dixaxetufekujomomoro.pdfIn PDF document text
    • http://cprsd2.com/uploads/1/3/0/6/130639436/c7a6e.pdfIn PDF document text
    • http://houseofsabbia.com/uploads/1/3/0/7/130775280/bibozoxub-binaki-nefomomixikor-bafulepaganeb.pdfIn PDF document text
    • http://the-golden-lotus.com/uploads/1/3/0/5/130550778/7285168.pdfIn PDF document text
    • http://datalyx.co/uploads/1/3/0/7/130775554/48f28f1e.pdfIn PDF document text
    • http://benjohnsontragedy.com/uploads/1/3/0/6/130639720/rubeguk.pdfIn PDF document text
    • http://accesshealthsc.services/uploads/1/3/0/6/130639658/2b030f2829a3e0d.pdfIn PDF document text
    • http://duxfordcommunitycentre.com/uploads/1/3/1/4/131437778/jitawozog.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C68 9392 bytes
SHA-256: b01b2dddb7df9298b99b379e1642db7501dc836e1e936b946bbbf486495e98a5

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