Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a60c62791b5588…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 22:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8326d778dd823a1235b713f1b4bd357f SHA-1: 484e3e862f0d093ba0bcbc1c0efde45ea2c5126d SHA-256: b2a60c62791b55885d210efcc465a728c29904447322ac340cc271c95314391c
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 a link farm designed to direct users to various external PDFs. The primary malicious URL identified is https://mezovuduw.ru/strik. The presence of ML and ClamAV detections, along with the link farm heuristic, strongly suggests a phishing or malware distribution attempt.

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://mezovuduw.ru/strik?utm_term=schwinn+airdyne+pro+owner%2527s+manual PDF link annotation
    • https://latewumopinigan.weebly.com/uploads/1/3/4/3/134313498/5956274.pdfIn PDF document text
    • https://pezawixutumef.weebly.com/uploads/1/3/1/1/131164564/2436763.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/sajovevitemek.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/the_practice_of_statistics_5th_edition_chapter_7.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/soxemilezawuvowigu.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/favozod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vumamuv.myartsonline.com/sofoxulifu.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/inbound_marketing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/marie_antoinette_movie_2006_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/navigator_free_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/zojemititoj.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/pafowa.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/cetusplay_apk_for_android_tv.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/ziluwetepebilutenegupute.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/zesazukozixazakafuwejag.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 5448 bytes
SHA-256: a0a2c8067959cce0318fecf999ceff7b76f6ec382b5ca1ecdb1d6d1772313635
font_01_sfnt_off0000f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF323 10856 bytes
SHA-256: ebdc9d89c7c6ad185f70a51166706b53e4adde8d81c7117f282aedd8e7f3fc23
font_02_sfnt_off00011857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11857 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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