Malicious PDF — malware analysis report

Static analysis result for SHA-256 0743ad2ac6b6ee0b…

MALICIOUS

PDF

71.2 KB Created: 2020-04-02 10:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a97e10bf3608ef2106c60cf0b51a4a2c SHA-1: a05064d70ae9a46521ebc5185fc844f3575d929f SHA-256: 0743ad2ac6b6ee0b12aab4ddfa0897e1739ac85305f8bdb96722498d9a3d9fc4
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of numerous URLs indicates an attempt to direct users to potentially harmful external content, likely as part of a phishing or malware distribution scheme.

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://louisbohemelocation.com/uploads/1/3/0/7/130739026/130739026.html#dungeons+and+dragons+5e+all+playable+races
    • http://elledonnaboutique.com/uploads/1/3/0/8/130813614/dupemufipir.pdf
    • http://ltvfunding.com/uploads/1/3/0/4/130435876/rutiz-bojazozobegegek-kimekivoposoban-latupejimi.pdf
    • http://canativeseeds.com/uploads/1/3/1/3/131398294/9619927.pdf
    • http://ursasys.net/uploads/1/3/1/1/131164114/300a96ca0.pdf
    • http://lettuce212.com/uploads/1/3/1/4/131453915/wazimofobira_rulisejagenu_fadojudosubobet.pdf
    • http://dominionmortgagelc.com/uploads/1/3/0/3/130313826/a3f6733777.pdf
    • http://laoyemiao.com/uploads/1/3/0/7/130740340/7049802.pdf
    • http://pinupssalon.com/uploads/1/3/0/7/130776123/d10af5c7797edd.pdf
    • http://bathmagick.com/uploads/1/3/1/3/131382330/746172.pdf
    • http://tonygezziportfolio.com/uploads/1/3/0/4/130488410/siditu.pdf
    • http://northlimit.com/uploads/1/3/0/6/130605380/2573940.pdf
    • http://ernahrungsberatung.de/uploads/1/3/1/4/131437183/c2f3d.pdf
    • http://waitakaruruschool.com/uploads/1/3/1/4/131406686/zizoradi.pdf
    • http://hhcn.biz/uploads/1/3/0/5/130550775/92c1e44952b.pdf
    • http://preudhommedesigns.com/uploads/1/3/0/6/130621108/8138911.pdf
    • http://chichomeinterior.com/uploads/1/3/0/3/130379274/0d5f7cf3fae9bf6.pdf
    • http://centerforempowerment.net/uploads/1/3/0/3/130379370/foporetasidifokuxe.pdf
    • http://williwisedaycamp.com/uploads/1/3/0/7/130740008/628680.pdf
    • http://dfwhousebuyer.net/uploads/1/3/0/6/130621812/rafesapamomikis.pdf
    • http://pof-callapp.com/uploads/1/3/0/7/130738789/4890128.pdf
    • http://peinturecreation.com/uploads/1/3/1/0/131070500/d7169ea49d7.pdf
    • http://melissalaranovias.com/uploads/1/3/0/6/130639808/8b3074b2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c997.bin
237b2fb1cf220484a686d354936d605208ede63f7ab501661109441d34cf7da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC997 11032 bytes
font_01_sfnt_off0000efba.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBA 2652 bytes
font_02_sfnt_off0000f923.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF923 16036 bytes

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