Malicious PDF — malware analysis report

Static analysis result for SHA-256 6df5d09afabb33cb…

MALICIOUS

PDF

86.9 KB Created: 2021-03-17 05:57:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 59cc234f1bdf865eecf9cbdbe26c77ae SHA-1: 201a449a508abff014da44f635b0b441339590f9 SHA-256: 6df5d09afabb33cb1c532c32a8330a90bc0aec81ec99c42b317541c8b1b2c6d9
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious URL. The ClamAV detection and ML classifier further support its malicious nature. The embedded URL `https://jottigo.ru/strik?utm_term=roland+tr-808+drum+machine` is the primary indicator of compromise, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/strik?utm_term=roland+tr-808+drum+machine PDF link annotation
    • http://vagijuderotogur.22web.org/jenexupo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371258/normal_5fefecfc2551f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418791/normal_5fdfd18ef254e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fd31d227b37b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388037/normal_5fc7394359177.pdfIn PDF document text
    • https://cdn.sqhk.co/nodezaneripe/cigicdx/mr_ninja_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/mamidusidozu/hpagchh/modern_car_drive_2020_car_parking_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/Ohijigj/busuvuxax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418379/normal_5fcf68cc30307.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/ha5orWR/28476599408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482424/normal_6013c9be5b3e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461249/normal_5fc9953fea033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459337/normal_603554c928ff0.pdfIn PDF document text
    • http://mumavanetadasos.22web.org/jakiko.pdfIn PDF document text
    • https://cdn.sqhk.co/vikeguzag/icwjaig/wood_dual_monitor_stand_riser.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/b._a_m._d._u_date_sheet.pdfIn PDF document text
    • http://gonesolipekivin.rf.gd/dogizakomixugetafidu.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/72158306127.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/24884410899.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/gaxojixadusibugetosa.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/46838226860.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/fikuxirenogijobinuja.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/mugalo.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/55055399637.pdfIn PDF document text
    • http://voferinokubusob.rf.gd/nabekisudavinikifufosog.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/actuate_birt_designer.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_off0001135f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1135F 5376 bytes
SHA-256: 4572b6926cbdefe92740a42e7374ddb49acb337e9eeea38d340d250971cf63cf
font_01_sfnt_off00012580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12580 11576 bytes
SHA-256: 249295fbeb9c090361dd509688887c75a949ff49ea13548021f428cb398c69f9

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