Malicious PDF — malware analysis report

Static analysis result for SHA-256 0976a827a3f298e2…

MALICIOUS

PDF

68.7 KB Created: 2021-02-23 19:21:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b614a0a175c8df6102fbda18c8694d50 SHA-1: cd5559efd0eae0122556dd801c31827196665032 SHA-256: 0976a827a3f298e22755b227fd9252937f68534b6e98d0d25b91d4719e76bff8
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to 'Civil war webquest answers', directing users to potentially malicious URLs for further exploitation. No scripts were extracted, but the overall structure and heuristic firings indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wix?keyword=civil+war+webquest+answers PDF link annotation
    • https://cdn.sqhk.co/mibupufek/pjaoNhi/16162705924.pdfIn PDF document text
    • http://kyukty68.xyz/resudegekebugobokatovirorqc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379377/normal_601ed8ce0185e.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/j3EibhO/97087029933.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/devurelubaji.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/morezopejadow_rivobinebowisow.pdfIn PDF document text
    • https://vigegenatiborig.weebly.com/uploads/1/3/0/7/130740049/defopesapakemanisaki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413455/normal_5fc77176d5ee4.pdfIn PDF document text
    • http://alkim.xyz/taus_machine_translation_post-_editing_guidelinesqtwqr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451949/normal_603537fc9f8dc.pdfIn PDF document text
    • https://momewevegugeb.weebly.com/uploads/1/3/5/3/135326076/voxutowolaxukige.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/vlq9ghi/international_business_management.pdfIn PDF document text
    • https://wujatukeki.weebly.com/uploads/1/3/1/8/131856991/dipugugukozoj.pdfIn PDF document text
    • http://websporizle3.com/gakabelitokopogedokarnbmzm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407813/normal_5ffec21404d53.pdfIn PDF document text
    • http://talkme-news.info/godarigonasezjepfe.pdfIn PDF document text
    • https://fizijoju.weebly.com/uploads/1/3/0/8/130814030/vedoniraja_rugaxafij_bitavilogumepu_mivasonabe.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/jigjiat/world_of_warcraft_original_game_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fd0f7bc847b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494436/normal_601d965aa0a09.pdfIn PDF document text
    • http://bostpolamos.site/pairing_plantronics_backbeat_go_2muu0f.pdfIn 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_off0000d358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD358 5000 bytes
SHA-256: 7052a86d3c847c4993d37684414a955707acbf244629001cfb4c3aa4990c15e0
font_01_sfnt_off0000e479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE479 9648 bytes
SHA-256: 47cc5297e36e4ee36569aaca22fe05d1d866b098e92221915665102a6b65d997

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