Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee84cbcee9b5138…

MALICIOUS

PDF

73.2 KB Created: 2021-03-25 02:51:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 568bd19a71b4bb289e566f798d5c7bec SHA-1: 5e8b0c916a49e9856d63ba42e0c806e4ad27498f SHA-256: 5ee84cbcee9b51383c0f997bbe355fa7ef88428819521742dd05ec2a75d8cc5a
126 Risk Score

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 0.9960

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://xezojetit.ru/wix?keyword=shiloh+music+center PDF link annotation
    • http://bebetadiruj.mywebcommunity.org/how_long_to_put_jerky_in_dehydrator.pdfIn PDF document text
    • http://vivaxuza.iblogger.org/nifeni.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuzorumuji/j5ibX2w/strike_force_arcade_fps_apk.pdfIn PDF document text
    • https://vasefifux.weebly.com/uploads/1/3/1/3/131382239/lurokeju.pdfIn PDF document text
    • https://jafiwivejo.weebly.com/uploads/1/3/5/3/135305612/613976.pdfIn PDF document text
    • http://solifixogalek.mypressonline.com/bihar_budget_2020_20_in_english.pdfIn PDF document text
    • https://nirumoxizexajiv.weebly.com/uploads/1/3/4/5/134524745/vafovib.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490547/normal_5ff1cf440bbb3.pdfIn PDF document text
    • https://gojanevalu.weebly.com/uploads/1/3/4/3/134353606/5812d7f473fc2.pdfIn PDF document text
    • https://cdn.sqhk.co/neliwuwo/kbhbWhi/wordpress_login_plugin.pdfIn PDF document text
    • http://kudezixajuxuni.66ghz.com/fallout_4_console_commands_level_up_points.pdfIn PDF document text
    • https://cdn.sqhk.co/bavozazav/Aokdghe/jump_over_the_moon_brain_puzzle.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/IiN1xie/spiderman_vs_venom_omnibus_instocktrades.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/OFhhDgd/update_virus_definition_files.pdfIn PDF document text
    • http://nuzarekuzugav.mypressonline.com/seweloxufegiri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490953/normal_603f3c0565d1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475729/normal_5ffe81b48c367.pdfIn PDF document text
    • https://jexesatarufo.weebly.com/uploads/1/3/1/4/131437655/28c9613f.pdfIn PDF document text
    • http://solewuzifadi.iblogger.org/47206215908.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/185d4835-bd5d-4d00-9312-20ff061812ec/brother_hl-5450dn_drum_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6960ea8-5146-44f0-9e66-dcba89e532b2/42753287394.pdfIn PDF document text
    • http://tawenaxogiminax.epizy.com/black_diamond_storm_headlamp_amazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7617ebf-b4ed-42c7-a7aa-f508ef173e26/justin_guitar_beginner_songbook_song_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0567c54f-937a-4cba-87d2-8415fef123c8/how_much_does_a_refrigerator_repair_usually_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f474b7f-cb25-4e9b-a917-7e6433a95a40/52385015085.pdfIn PDF document text
    • http://mafonevaverazux.atwebpages.com/media_agency_company_profile.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_off0000e0be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BE 4932 bytes
SHA-256: c2167cceb60c9e0b4465a17b54b29c56224dd343052e87b5caf9c9ebb0ab76fa
font_01_sfnt_off0000f160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF160 11232 bytes
SHA-256: 91f808d13dfee7d96ffbe822e8646e14f820382410e33d2b2ac3d345a411183e