Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ad01fa2e41d24a…

MALICIOUS

PDF

33.0 KB Created: 2020-05-25 00:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18bbc8a44ebee46f9b9d1bac1c64ca33 SHA-1: 969468af7d4b735779999a34098bc95760cd97c3 SHA-256: f5ad01fa2e41d24a93955fdc357ed7f98a54e7d2562bc4cd41f958063308bec0
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a large number of external links, many of which point to similarly structured URLs on different domains, suggesting a link farm or SEO poisoning tactic. The document body mentions 'Digimon world next order recruit gui', likely a lure to entice users to click on the embedded malicious URLs. The primary malicious URL identified is http://74-123-73-184.mgwnet.com/uploads/1/3/0/2/130273790/130273790.html#digimon+world+next+order+recruit+gui.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://74-123-73-184.mgwnet.com/uploads/1/3/0/2/130273790/130273790.html#digimon+world+next+order+recruit+gui
    • http://russhutchison.com/uploads/1/3/0/7/130776814/7daa28.pdf
    • http://mathleticsusa.org/uploads/1/3/0/2/130270768/punorifazisatabeti.pdf
    • http://mta-sts.mail.luzcarmenboutique.com/uploads/1/3/0/5/130551639/papunizod_xudugevorikek.pdf
    • http://albanese.org/uploads/1/3/0/9/130969298/5cdc4138e8.pdf
    • http://angela-hudgins.com/uploads/1/3/0/5/130588467/5912123.pdf
    • http://propertyaddicts.com/uploads/1/3/0/6/130621506/3715969.pdf
    • http://resourcefulmaven.com/uploads/1/3/0/6/130603841/nulaw.pdf
    • http://jillysconfections.com/uploads/1/3/1/4/131453633/luxiwopazifutixiwulu.pdf
    • http://bevpecksmiles.info/uploads/1/3/1/3/131383575/baluvunusej.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_off00005860.bin
69dac51b72bf9279d68ef07809afa307684ea946fe13575ba3000c100bd19860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5860 9556 bytes

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