Malicious PDF — malware analysis report

Static analysis result for SHA-256 75281ec7dee46fc0…

MALICIOUS

PDF

32.7 KB Created: 2020-04-08 01:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: da297933b435d0efc7264e657e4c07de SHA-1: 0dd61ab764487145a7cd9be4a65a594a01f643a0 SHA-256: 75281ec7dee46fc01e3f739404c4e6721ad13e337801ed6d8176583dfcf509d2
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded links are the primary indicators of malicious intent, likely serving as a lure to external sites.

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://twistofmodern.net/uploads/1/3/1/4/131406154/131406154.html#autoridad+de+energia+electrica+barranquitas
    • http://hlxtechnology.com/uploads/1/3/0/7/130739553/siwitakebu.pdf
    • http://myisaacjohson.com/uploads/1/3/0/4/130483117/litulagasu.pdf
    • http://spdcpa.ca/uploads/1/3/0/2/130289305/sepikilomusera.pdf
    • http://mrsmellgoods.com/uploads/1/3/0/6/130639510/6503458.pdf
    • http://abihomes.net/uploads/1/3/0/4/130490665/4724930.pdf
    • http://kwintradius.com/uploads/1/3/0/2/130274109/tomopukose-nunalufud.pdf
    • http://avniz.com/uploads/1/3/0/7/130776776/9bbd4ef.pdf
    • http://geelonglandscaper.org/uploads/1/3/0/5/130550660/lazagawa.pdf
    • http://volry0-dvto99.com/uploads/1/3/0/3/130313383/wavosudonigab.pdf
    • http://cisollc.org/uploads/1/3/0/5/130547286/vozadiluzimarinusiw.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000550d.bin
be5b79d62d8694b2967281e1c0173b0ddcf96bb1403e62b06e06d4c64113b7dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x550D 8556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.