Malicious PDF — malware analysis report

Static analysis result for SHA-256 15024b604470f61d…

MALICIOUS

PDF

259.5 KB Created: 2020-12-29 23:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3aa037eac4a4d474c07b109c97691184 SHA-1: 7f59f7d962b9bcb64bc263bfb54c80b7d9b27534 SHA-256: 15024b604470f61d2e9d271c38c832b0b8b026962c740ac03a4b4bc8d4b756f8
262 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.001 User Execution: Malicious Link

The PDF contains a fake CAPTCHA lure and impersonates a brand to facilitate credential phishing. It also links to known malicious redirector infrastructure, specifically 'traffking.ru', which likely leads to further malicious content or phishing pages. The presence of these elements strongly suggests a phishing attack aimed at harvesting user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rupusuji.weebly.com/uploads/1/3/4/8/134878943/6656012.pdf.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://traffking.ru/strik?utm_term=doom+eternal+dlc+release+date+steam In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5fc18269be64e.pdfIn PDF document text
    • https://cdn.sqhk.co/jetobatu/Sokpq56/best_rollerball_pen_for_writing.pdfIn PDF document text
    • https://rupusuji.weebly.com/uploads/1/3/4/8/134878943/6656012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387931/normal_5f92a64bb181e.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/dejewo.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/DThj6hg/game_dev_tycoon_2_free_apk_download.pdfIn PDF document text
    • https://kotonimurapuva.weebly.com/uploads/1/3/4/4/134440920/zekixedi.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/serukizexeliwu.pdfIn PDF document text
    • https://penulikadima.weebly.com/uploads/1/3/1/4/131482887/busojajilubasit_lojab.pdfIn PDF document text
    • https://dunopupusegujuz.weebly.com/uploads/1/3/4/3/134348927/badevobafeg.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/d5a2a3b4.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/AUK0Tjb/gezifav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374839/normal_5fcf518ccf92c.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/ifhgYjh/83522106242.pdfIn PDF document text
    • https:///\/slayersclub.bethesda.net\/en\/article\/2Ggd8kIexgYwipuytGiE1q\/castle-grayscale]here[\/urlIn PDF document text
    • https:///\/slayersclub.bethesda.net\/en\/article\/D7zPwbEArXShzTVdJRIbT\/hack-to-the-future-ii]here[\/urlIn PDF document text
    • https:///\/slayersclub.bethesda.net\/en\/article\/7lL1vts8D1FeVmwPF1dabT\/precious-metals-event?_ga=2In PDF document text
    • https:///\/help.bethesda.net\/app\/incident10\/?prod=1128&cat=287&subcat=1134(PressIn PDF document text
    • https://\/\/bethesda.net\/en\/article\/5Wx9QeorMSfMZCwLg6VpoS\/doom-eternal-launch-details]here[\/urlIn PDF document text
    • http:///\/support.amd.com\/en-us\/download]AMDIn PDF document text
    • http:///\/help.bethesda.net\/app\/answers\/detail\/a_id\/49836]minimumIn PDF document text
    • http:///\/help.bethesda.net\/app\/answers\/detail\/a_id\/49836]here[\/urlIn PDF document text
    • http:///\/www.nvidia.com\/Download\/index.aspx]NVIDIA[\/url][*In PDF document text
    • https:///\/help.bethesda.net\/app\/answers\/detail\/a_id\/49867\/~\/how-can-i-play-with-my-friends-in-doom-eternal%3F]here[\/urlIn PDF document text
    • https:///\/www.microsoft.com\/en-us\/download\/details.aspx?id=8109]hereIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0003c0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C0AC 5084 bytes
SHA-256: 75b1a1b57325025eb8ae3d65f9d4938e1ac4adbf75d8849ee882846d211b10c7
font_01_sfnt_off0003d1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D1DE 15320 bytes
SHA-256: 63e97736a6851af5326b05e06723ab8b46ff66518a14dc4beb0a12eb429b6bca