Malicious PDF — malware analysis report

Static analysis result for SHA-256 63235136b40c5e78…

MALICIOUS

PDF

75.1 KB Created: 2021-02-23 12:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d161a68d4570376e736aa53ee9685eb6 SHA-1: 9e6b3b00300b45667ca7ce428c66476dfc0b1474 SHA-256: 63235136b40c5e78d1755a8d2f12a9ca2ad9c9297414ce3fc9e3c009dcf3588b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. The embedded URL 'https://bologen.ru/123?utm_term=colleges+with+interior+design+majors+in+virginia' suggests a lure related to educational programs. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://bologen.ru/123?utm_term=colleges+with+interior+design+majors+in+virginia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4494661/normal_6017de28a6786.pdfIn PDF document text
    • https://cdn.sqhk.co/zonurubo/yxiiN9x/lego_star_wars_tfa_apk_mali.pdfIn PDF document text
    • https://ninujesifig.weebly.com/uploads/1/3/1/4/131453022/wukejoronajebokinoba.pdfIn PDF document text
    • https://kumenesasewoton.weebly.com/uploads/1/3/4/7/134773405/sezigewepa.pdfIn PDF document text
    • https://fugikoji.weebly.com/uploads/1/3/4/6/134611078/f7f5ee59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_601ae117c7e5b.pdfIn PDF document text
    • https://cdn.sqhk.co/jiwosowo/5A4haUL/93211075127.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sijomawawu.epizy.com/forms_of_vitamin_d_in_food.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/tudubamilufekapamisa.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/cercle_de_la_forme_maillot_numero.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/tukazenawunuxerijovo.pdfIn PDF document text
    • http://nekipusixewid.epizy.com/telugu_movie_hyderabad_love_story_online.pdfIn PDF document text
    • http://ferodokibaw.epizy.com/57685912202.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/5972269277.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/17674589613.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/87384622132.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 5372 bytes
SHA-256: 865d3b107f73d3ef64c6e354e67b7afcfbb3b460d74aa4c34fcd7373d1d94131
font_01_sfnt_off0000f9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D6 10888 bytes
SHA-256: f0face3b9a044cd5fe7243ec47602fe6f3c831a3f306248dba47e331fff011ed

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