Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0849797ed06e2a8…

MALICIOUS

PDF

87.6 KB Created: 2021-05-30 19:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332d9e37e5de9c9f2473178a77dd2d5d SHA-1: a784efd1ab0a47108b296fabac109b53349eedb8 SHA-256: e0849797ed06e2a8dc70d8cf646651561550f385438841ef347f8cd7a7fc97c7
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. The primary external URI, 'https://jumiwimov.ru/strik?utm_term=catia+v5+help+file+location', indicates a lure related to Catia v5 help files, likely intended to deceive users into visiting a malicious site. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://jumiwimov.ru/strik?utm_term=catia+v5+help+file+location
    • https://cdn-cms.f-static.net/uploads/4459174/normal_5fd656223bd08.pdf
    • https://cdn-cms.f-static.net/uploads/4460232/normal_5fda815d337c2.pdf
    • https://cdn-cms.f-static.net/uploads/4383467/normal_606a97e25811f.pdf
    • https://cdn-cms.f-static.net/uploads/4382004/normal_602da79290d49.pdf
    • https://gononazenikemad.weebly.com/uploads/1/3/4/4/134482012/10e9e55801271.pdf
    • https://cdn-cms.f-static.net/uploads/4426676/normal_602c30e18d796.pdf
    • https://xikagarema.weebly.com/uploads/1/3/4/4/134489929/numakes.pdf
    • https://cdn-cms.f-static.net/uploads/4446773/normal_601b7c098662c.pdf
    • https://vevavosabiwebe.weebly.com/uploads/1/3/4/3/134349804/9334655.pdf
    • https://cdn-cms.f-static.net/uploads/4368770/normal_605b97cf8dde9.pdf
    • https://cdn-cms.f-static.net/uploads/4495694/normal_603aabd067eb6.pdf
    • https://cdn-cms.f-static.net/uploads/4481988/normal_60677a7217669.pdf
    • https://pigofularujatuf.weebly.com/uploads/1/3/4/3/134360020/5959961.pdf
    • https://puxajibixitukus.weebly.com/uploads/1/3/4/4/134457664/6541a10fadc1.pdf
    • https://cdn-cms.f-static.net/uploads/4447646/normal_605b698b521bb.pdf
    • https://nenafefetu.weebly.com/uploads/1/3/1/4/131406263/8325888.pdf
    • https://static.s123-cdn-static.com/uploads/4409606/normal_60003d7ba1788.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c98a23fc-1a17-413b-8872-5f542816544b/can_relationships_change_for_the_better.pdf
    • https://uploads.strikinglycdn.com/files/2150d455-94a7-43a8-96fd-3fb5aa7075f9/the_onion_fellowship_2019.pdf
    • https://uploads.strikinglycdn.com/files/1eb671d4-2223-4aca-b98a-aa2916e4ad75/how_to_know_whether_a_compound_is_ionic_or_covalent.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
    • 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_off00010338.bin
ca12731f7167e3e99e364d94fb57d1723ff1ca13f08efc220c5af435297be81b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10338 4916 bytes
font_01_sfnt_off00011404.bin
12bdcfca8912ad184d8e8446dc0e550bd3953c9b62f51f52eb7abc1d2bbc599e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11404 11564 bytes
font_02_sfnt_off00013bbc.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BBC 16204 bytes

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