Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a92a62255fe773…

MALICIOUS

PDF

84.0 KB Created: 2021-03-07 06:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7495546e420effc4cc1ed185679b235e SHA-1: 5e5063fcc7c6c708ef9274bad39253ea73171814 SHA-256: d3a92a62255fe7730e2e0a2a60943292747bd9ec235c0e3d1601e1827f28ea44
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fokemale.ru/wix?keyword=jeffco+school+calendar+2017-18 PDF link annotation
    • http://copyrightmediahelp.com/67834609264zs2l5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484358/normal_5fcbd1388b484.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/jjahcgi/nfl_fantasy_football_cheat_sheet_ppr_2020.pdfIn PDF document text
    • http://tujidal.mypressonline.com/head_first_java_3rd_edition_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/iaibgcz/sonedibite.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/dsqKirx/77253693019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403259/normal_602e2927223be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_602a7deee82d2.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/Wig6A6C/zenibobajire.pdfIn PDF document text
    • http://metarapuw.mypressonline.com/crossfire_miniature_rules.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475995/normal_5fe435fc37b1a.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/xomazebukejefopimemiputid.pdfIn PDF document text
    • https://cdn.sqhk.co/fufafetuno/bnheji2/igun_pro_2_the_ultimate_gun_application.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455669/normal_5ff69099b0417.pdfIn PDF document text
    • http://kindraretterath.com/zesemepepepomubirocoxb5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ebba3e40-d49f-4cc8-b137-373bb1124918.filesusr.com/ugd/384ea4_25d1107bd3664049b52e360ad566fa90.pdf?index=trueIn PDF document text
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_90dd90fd0b0a4e32bc8f676ddf70494e.pdf?index=trueIn PDF document text
    • https://f3b8d348-8566-49c9-a9f8-a2c3b9e1bc8e.filesusr.com/ugd/f1c748_1b48683a1c3e44e695f648c9ee3be86e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/new_bhojpuri_video_3gp_mp4_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/xifelinoterikometoloxafa.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/85300500828.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/jiwazasegozokezozuvi.pdfIn PDF document text
    • https://f538c46d-6aff-4997-95da-320e40b30403.filesusr.com/ugd/262ba4_209289473d4647998ef75c82cf9668b7.pdf?index=trueIn PDF document text
    • https://92fed17e-af34-466b-b3fe-38cd9ef27699.filesusr.com/ugd/192d58_0b269a6a83504c50bb581f80ba369ac0.pdf?index=trueIn 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_off00010a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A17 5732 bytes
SHA-256: 32865aa8caa3d20387bce234142afb7f3e15c5e2e03cfc9db16edde58ec92e0c
font_01_sfnt_off00011da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA3 10796 bytes
SHA-256: 92935a2d33b9607c005ba3012383673aa63fa1ef1a31ce98a46fceb5b6cf0da0

Open this report in the interactive analyzer, or submit your own file for analysis.