Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c533272b008d9b…

MALICIOUS

PDF

36.9 KB Created: 2020-04-07 11:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6fccb80ff282c15643bb2e5bb47a0e32 SHA-1: 8a962cd72e4a17422f2d9784ba4419d81fea83a2 SHA-256: 72c533272b008d9bdc637f2f9f3cd77cbacd89c35509bede8d080456d67bd401
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, many of which point to other PDF files with numeric slugs, suggesting a link farm or SEO spam operation. The ML classifier strongly indicated maliciousness, and the presence of numerous external URIs supports this. The document body's content is garbled, but the presence of URLs like 'http://420edible.net/uploads/1/3/0/8/130813033/130813033.html#modern+warfare+ak47+setup' indicates a potential lure, possibly related to gaming or illicit content, to drive traffic to these linked resources.

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://420edible.net/uploads/1/3/0/8/130813033/130813033.html#modern+warfare+ak47+setup
    • http://managermom.ca/uploads/1/3/0/6/130620341/c2d1488ad84c.pdf
    • http://borelgame.com/uploads/1/3/0/2/130273850/xuxuxeluvor.pdf
    • http://thingharmony.net/uploads/1/3/1/4/131437254/7980428.pdf
    • http://nungwivolunteer.org/uploads/1/3/0/4/130489019/7980a041.pdf
    • http://kitcatcorp.com/uploads/1/3/0/4/130488410/443878.pdf
    • http://kingdompeople.org/uploads/1/3/0/5/130590538/6897211.pdf
    • http://mycateringguide.com/uploads/1/3/0/6/130604874/27180c8e23952a.pdf
    • http://vostokimports.com/uploads/1/3/1/4/131454731/sazuzobamitituwi.pdf
    • http://travelwithlarae.com/uploads/1/3/1/4/131408169/1461532.pdf
    • http://abelincolnsgirl.com/uploads/1/3/0/4/130489090/videlaga.pdf
    • http://romasenzaglutine.com/uploads/1/3/1/3/131383914/niruboji.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_off000068dc.bin
c8dae9fae5fad789a4e7d49b2e1051f4adfd4492271a6bef03e50bfeed4d2bc7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DC 7720 bytes

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