Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f602b9ed72a8619…

MALICIOUS

PDF

75.8 KB Created: 2021-06-03 20:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e67f4a4608c22dfceea4c51f02a8eca1 SHA-1: 10404835e4e01f682a61cb515a3f6d7e27bcbce0 SHA-256: 9f602b9ed72a8619767289bb5501b8dadbf71760edb2e552457914834d2234df
134 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous external URIs, many hosted on disposable domains, and one specific URI, 'https://soxebez.ru/123?utm_term=why+should+i+hire+you+answer+examples', is highlighted as a potential phishing lure. The document body, though heavily obfuscated, suggests a pretext related to job interview answers, aligning with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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://soxebez.ru/123?utm_term=why+should+i+hire+you+answer+examples PDF link annotation
    • https://mivewuwadomabat.weebly.com/uploads/1/3/1/6/131606259/abd2c0a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390382/normal_5fec76fa94c30.pdfIn PDF document text
    • https://sivaxibekexisu.weebly.com/uploads/1/3/4/4/134488572/19dcdff26cf5a.pdfIn PDF document text
    • https://fizijoju.weebly.com/uploads/1/3/0/8/130814030/powiluxinilojuj_juwusev_ligegolobipuji_tebebibepatux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450727/normal_5fdebd194c160.pdfIn PDF document text
    • https://gaxiworet.weebly.com/uploads/1/3/1/4/131408942/turepu.pdfIn PDF document text
    • https://bolafuba.weebly.com/uploads/1/3/4/6/134668532/fepurivi_vovikajefub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bevojoluvu.pbworks.com/w/file/fetch/144448146/1613333874.pdfIn PDF document text
    • http://zudilazo.pbworks.com/w/file/fetch/144505260/31157489056.pdfIn PDF document text
    • http://molitutolu.pbworks.com/w/file/fetch/144536370/adobe_audition_3.0_free_download_full_version_2019.pdfIn PDF document text
    • http://zalonuzojeru.pbworks.com/f/rockshox_xc32_service_kit.pdfIn PDF document text
    • http://xobapotowi.pbworks.com/f/15044098642.pdfIn PDF document text
    • http://nolumemonip.pbworks.com/w/file/fetch/144508740/80769935699.pdfIn PDF document text
    • http://pezeliv.pbworks.com/w/file/fetch/144426207/obeb_okek_soru_zm.pdfIn PDF document text
    • http://redejok.pbworks.com/w/file/fetch/144501141/jobs_in_gta_rp.pdfIn PDF document text
    • http://wimarolos.pbworks.com/f/21187289327.pdfIn PDF document text
    • http://vifogajo.pbworks.com/w/file/fetch/144517959/cuanto_vale_un_pie_en_metros.pdfIn PDF document text
    • http://gediripu.pbworks.com/w/file/fetch/144557622/26985118642.pdfIn PDF document text
    • http://jajisaparev.pbworks.com/w/file/fetch/144418398/twrp_3.0_2_apk_download.pdfIn PDF document text
    • http://zupelapowi.pbworks.com/w/file/fetch/144498465/wamovawinu.pdfIn PDF document text
    • http://ruwezebom.pbworks.com/w/file/fetch/144427920/sram_red_etap_crank_installation.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_off0000e727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE727 5472 bytes
SHA-256: 17ed2fe5232a87364c394f6a1bd74ea73e45262746f3a0904736ea0e156c27c0
font_01_sfnt_off0000f9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BA 11568 bytes
SHA-256: 2059c9a6781289c9b1fa09f9268c4ec50b620ebb906e6fde88ed6f0124ff6d0d