Malicious PDF — malware analysis report

Static analysis result for SHA-256 02822a209228c359…

MALICIOUS

PDF

38.8 KB Created: 2020-03-07 11:47:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1ab153295e2eae1f33d9fd23d8f4e03c SHA-1: c3c133af317e899dc099bd3ff67192f0bc198b0b SHA-256: 02822a209228c35991dc21cd91de145c9eb4e8eece1f31acbc35e35c5787df11
96 Risk Score

Malware Insights

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

The PDF document contains numerous external links, disguised as a study guide, which is a common tactic for distributing malicious content or leading users to phishing sites. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports this. No scripts were extracted, but the document's structure and embedded URLs suggest it's designed to redirect users to potentially harmful 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://iweargreatness.com/uploads/1/3/0/7/130776817/130776817.html#comptia+server++sk0-004+study+guide
    • http://naumu.family/uploads/1/3/0/5/130590583/fexonokewo_nexalexa.pdf
    • http://oc3.co.uk/uploads/1/3/0/7/130739398/fojupewiwatove_madaketerexav_katotuvu.pdf
    • http://pacificnwevents.com/uploads/1/3/0/4/130478123/42f855b47f5247f.pdf
    • http://foxgrove.tech/uploads/1/3/0/5/130544591/babajivuzok.pdf
    • http://motherbeijing.com/uploads/1/3/0/4/130489830/5094147.pdf
    • http://mrviolinsd.com/uploads/1/3/0/7/130775376/392180.pdf
    • http://treatui.com/uploads/1/3/0/2/130291874/60bdc.pdf
    • http://yourpublicistknows.com/uploads/1/3/0/5/130539763/b6003d.pdf
    • http://mail.derbyvineyard.com/uploads/1/3/0/5/130588971/49449358f68d3c5.pdf
    • http://4lifehealthwealth.com/uploads/1/3/0/7/130740082/95f84834088b8.pdf
    • http://www.hcwec.org/uploads/1/3/0/6/130620564/1469435.pdf
    • http://air-tightness.net/uploads/1/3/0/6/130603929/546022fea00.pdf
    • http://www.allanenv.com/uploads/1/3/0/2/130270934/milowebi_nusamuw.pdf
    • http://norighttokill.org/uploads/1/3/0/4/130483753/06d643.pdf
    • http://rinpochefilm.com/uploads/1/3/0/4/130488387/5edf4d7.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_off00006c04.bin
b0c1e8f0f685e4bf406de1ccdf5a874e82c7da9a704f91dd1dab37b7cb196cdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C04 8504 bytes

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