Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9277678f2afe76…

MALICIOUS

PDF

70.7 KB Created: 2021-02-15 21:16:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ea67796715511f65fb1cba3c4dff1f80 SHA-1: 522f326ead804b7c8b5a048c16bbac37671f0ea0 SHA-256: 9c9277678f2afe760bc22aa62ce117fe3be5bf23e9da3f423ada0ce521531f71
126 Risk Score

Malware Insights

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

This PDF file is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, presenting numerous URLs that lead to potentially malicious content, disguised as movie downloads. The embedded URLs and the heuristic findings of a link farm on disposable hosting strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/aws?utm_term=the+hunger+games+2013+movie+download+in+hindi+filmyzilla PDF link annotation
    • http://fitokaps.xyz/wikupepotepitekixaxulosilv0isw.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawomo/jbhcJia/online_auctions_melbourne_australia.pdfIn PDF document text
    • http://naturaleone.space/ice_cream_shop_in_spanishuuz3x.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/MOSgfWz/youtube_html5_video_player_download_for_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/jgvhbhs/lunajoka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475728/normal_6021d08c96ad2.pdfIn PDF document text
    • https://cdn.sqhk.co/leporolino/jj1jgmU/weapon_builder_pro_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427094/normal_5fd1f8fbab22a.pdfIn PDF document text
    • http://christinaanddavid2019.com/research_about_academic_performance_of_students3bpjn.pdfIn PDF document text
    • http://taygerr.com/lonugofidikozimut79i3.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/gogonof/bubbleupnp_pro_apk_arm64.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/brooklinen_vs_boll_and_branch_sheets.pdfIn PDF document text
    • http://xiwaresijo.epizy.com/70134298103.pdfIn PDF document text
    • http://guwiludabak.rf.gd/corsair_curse_quick_guide_osrs.pdfIn PDF document text
    • http://xurukat.rf.gd/nepigafovelodamuramikam.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_off0000d32c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD32C 6064 bytes
SHA-256: 93981b876a3fc0065f8d3697cfe2d4924d447171cde9f3ce8a57ca6420ebb639
font_01_sfnt_off0000e7ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CE 10908 bytes
SHA-256: d04c408d2308f12dc2b584d614bdcc46eb6255e3998f13a6a6dd39ef958a537a

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