Malicious PDF — malware analysis report

Static analysis result for SHA-256 786b2d92ee44d938…

MALICIOUS

PDF

39.8 KB Created: 2020-06-13 18:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29b3357d4f75b6efceda1118338005f8 SHA-1: 8db6300d5ff887346793917a812c1047e16911b2 SHA-256: 786b2d92ee44d938b8cc437c4c0b1bcde2d29bed2cb7ce704c2bbd441c2b5754
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection to malicious content. The document body contains a deceptive title related to 'Pokemon' and includes URLs that are likely part of this scheme. No scripts were extracted, but the presence of numerous external links indicates a high likelihood of redirecting users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://katherinenewson.info/uploads/1/3/1/3/131380942/131380942.html#pok%25C3%25A9mon+ecchi+version
    • http://texaslivingsoils.com/uploads/1/3/0/6/130620731/ddf862190b85.pdf
    • http://dayakquest.com/uploads/1/3/1/1/131164132/dixifonovumikof.pdf
    • http://windwardprodesigns.com/uploads/1/3/1/3/131381772/lemifawubivibup-wasabojabobo-vivonuwazojutox-kuwewuwimegu.pdf
    • http://interpreter-portuguese.com/uploads/1/3/0/4/130483578/lifesuputig.pdf
    • http://kristelbecares.com/uploads/1/3/1/4/131483128/5fc40af1694.pdf
    • http://mail.browbeginnings.com/uploads/1/3/0/8/130815381/mofekud.pdf
    • http://rcdesigns-online.net/uploads/1/3/1/4/131407890/wubagixij-vakazigaj-kabemesovixifi.pdf
    • http://myhappyheartspreschool.com/uploads/1/3/1/3/131383614/ginudi_lomoduba_fenutusibazosef_potoridanuga.pdf
    • http://eleahhyattlmft.com/uploads/1/3/2/3/132303370/3589630.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://jikizazona.files.wordpress.com/2020/06/masinepiximiwegunizub.pdf
    • https://bodazilafaje.files.wordpress.com/2020/06/vopurin.pdf
    • https://saziwiri.files.wordpress.com/2020/06/jotogamevuniget.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ec.bin
f5a3e0886b95c9b467f99b5e94d28133f575fbf2270330b68ad91cfe8bde1cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EC 1884 bytes
font_01_sfnt_off00006e09.bin
9cd6d36295acc72f8a824b140fddd66e86ac275a11645b5e85b96daf109b45fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E09 10628 bytes

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