Malicious PDF — malware analysis report

Static analysis result for SHA-256 215139701f6cb9f2…

MALICIOUS

PDF

70.9 KB Created: 2021-03-30 13:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6de9523a1802fa7d16b8ac0b6909ee24 SHA-1: 89168d897a29b2f4e2f97730ecf57266e193fd42 SHA-256: 215139701f6cb9f2289a95066aafc5b2e1771c4f3a73a1ce555ca214d2f8fbf4
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 0.9998

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/wix?keyword=2017+ap+macroeconomics+free+response+answers PDF link annotation
    • https://cdn.sqhk.co/muvenetu/HFKEijz/kobavidukapagoseneduxuti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416154/normal_60337e0baf569.pdfIn PDF document text
    • https://cdn.sqhk.co/jutalufelex/hCijmje/daily_cleaning_checklist_for_dental_office.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/aGEWij5/43793405680.pdfIn PDF document text
    • http://wersita.space/eureka_enviro_steamer_300a_replacement_pads3k7bd.pdfIn PDF document text
    • http://vbnmcxz.xyz/nerixejoqul.pdfIn PDF document text
    • https://cdn.sqhk.co/mitukutowum/ieDHibV/xebiragovuxu.pdfIn PDF document text
    • http://uuuuull.space/boremuvojevesauy213.pdfIn PDF document text
    • http://ita-fitness.fun/impact_of_globalization_on_african_cultureftjl4.pdfIn PDF document text
    • https://cdn.sqhk.co/tokexinolelu/gd5iaia/13905488384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367938/normal_60034695a6b9c.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/ZSAja00/cheetah_top_speed_running_video.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/uCUjd58/aluminium_doors_and_windows_designs.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/timeziso/habits_of_mind_posters_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/boni_mwaitege_safari_bado_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/noleketejo.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/haynes_repair_manual_1996_ford_ranger.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/beloderolisurixipadu.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/dilotejovugofenim.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/24122786943.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_off0000d6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EE 5532 bytes
SHA-256: 142aac21d669afd9f41109a1553ec08e297c996f5f2e57232985ed0c04f64674
font_01_sfnt_off0000e9be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BE 10728 bytes
SHA-256: 2f90cf0637a3da710ed61d0d725d8c39d2a62be27168423c0567a080be7e42f9

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