Malicious PDF — malware analysis report

Static analysis result for SHA-256 da5f015791e7f159…

MALICIOUS

PDF

74.5 KB Created: 2021-03-01 05:39:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e183ad999f8856ec350f3329c155ba9d SHA-1: 9de0f1a6c06899d60a3878c06308bedb39625be3 SHA-256: da5f015791e7f159d5c30398b9f7cbcb635b55371d570fa756a96e14c6f8c8a6
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 0.9996

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://botokaw.ru/wix?keyword=the+house+of+the+scorpion+theme PDF link annotation
    • http://luwinilulurop.mywebcommunity.org/what_are_the_common_properties_of_transition_metals.pdfIn PDF document text
    • http://cheapestshop.xyz/domain_5_statistics_and_probability_answer_key74g0n.pdfIn PDF document text
    • https://cdn.sqhk.co/jinuzekovodi/gfggheR/cartoon_about_kobe_bryant_helicopter_crash.pdfIn PDF document text
    • http://biolinkus.me/the_expanse_season_4_episode_9_castal3hv.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/PhcKjdq/alcohol_factory_simulator_wiki.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/an_introduction_to_mechanics_by_kleppner_and_kolenkow.pdfIn PDF document text
    • https://cdn.sqhk.co/matezafun/aPdhcgj/nesokubiwur.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/agjXWQQ/41029291756.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/ZhhfLyz/felebugex.pdfIn PDF document text
    • http://xepidenad.scienceontheweb.net/what_is_the_symbolism_of_ravens.pdfIn PDF document text
    • http://nuverlites.online/20270046549oool1.pdfIn PDF document text
    • http://katipef.medianewsonline.com/84409952116.pdfIn PDF document text
    • http://milansit.space/the_crown_season_2_episode_6_fact_checkh7w8k.pdfIn PDF document text
    • http://mobufuwiwid.medianewsonline.com/bow_tie_pasta_and_sausage.pdfIn PDF document text
    • http://lizowaw.scienceontheweb.net/68406846748.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/ghawmji/96073077278.pdfIn PDF document text
    • https://cdn.sqhk.co/riwewazisara/cdACmjg/nascar_mobile_heat_cheats.pdfIn PDF document text
    • https://cdn.sqhk.co/motuxeneb/gjjfihf/92094005875.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/gicidXa/sulekojipinovuwixo.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/bUDjdgg/84185021447.pdfIn PDF document text
    • https://cdn.sqhk.co/lekusovu/jdihEha/farm_crush_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiluxusimutine.atwebpages.com/nomifarifasikozexuno.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_off0000e959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE959 4960 bytes
SHA-256: c5b50dd92ebd78b4d5c54c489529d21a9986fa8ef71c94c794af2d822bd6f8a3
font_01_sfnt_off0000fa17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA17 10164 bytes
SHA-256: f573773dcdfb718cb511553c7230f3e181f3353dd167e2fef1186e2b1c0be570

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