Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b12d6d16e2debd…

MALICIOUS

PDF

70.1 KB Created: 2021-04-01 10:25:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f3e86124f07cc7d43c79df6659b988fc SHA-1: 5956216c562de2bcc3662b4614e1220131b3073e SHA-256: d9b12d6d16e2debd45af734db1cd20f0ab5008fd6f14eb5ad74eb15c63bd29d8
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 0.9997

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://lozipotod.ru/wix?keyword=americal+weight+clinic+reviews PDF link annotation
    • http://jushq.pro/mac_cant_find_ue_boom3oj1u.pdfIn PDF document text
    • http://carbackseat.site/64971399874ttz9.pdfIn PDF document text
    • http://gratoramaa.website/zarixobugolobixivanvbzpf.pdfIn PDF document text
    • http://blacktea.space/37006963486g11q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501989/normal_606207c204448.pdfIn PDF document text
    • http://legendbilisim.com/tijomisuwiwolokigineled21oqs.pdfIn PDF document text
    • http://kino-vezde.ru/2002071964n0063.pdfIn PDF document text
    • http://damvglaz6.xyz/vopadudajifinexovuviwamkyw5.pdfIn PDF document text
    • http://masajsalonunuz.com/tizexelonijuwcwvj.pdfIn PDF document text
    • http://reduslim-europa.site/2010_chrysler_town_and_country_recalls_brakesj2woj.pdfIn PDF document text
    • http://fito4ka.xyz/average_age_of_a_homeless_persontgxil.pdfIn PDF document text
    • http://reawont.online/why_cant_i_watch_call_me_by_your_name_on_netflix1nudx.pdfIn PDF document text
    • http://nature-ital.space/fees_to_sell_on_etsy_ukjthkj.pdfIn PDF document text
    • http://requiremcgood.com/88079373529ojsdk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403141/normal_605aa9d616810.pdfIn PDF document text
    • http://nesobaka7.xyz/how_to_activate_verizon_extender4l74i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5cf6de6d-d475-4b1c-8c61-edb915f7dbbb/41317598962.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f5d6fc-54b8-4920-893f-62bfdc464361/xeladijuxexelemaguwipemam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b64a2ddb-8284-4ca0-87db-a18380a91ff7/luwuxewinowopubemiruleje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/defcc12d-b34e-4d18-9c26-6896de42ce0b/pelicula_caballo_de_troya_1_completa_en_espaol.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6D 5032 bytes
SHA-256: 3203dc9df6af221631c7c8ae404e888d9282e54bd0dd8f2ff2421fd786b96380
font_01_sfnt_off0000db65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB65 9964 bytes
SHA-256: dc9435753183ba7effd7fb6c2b69f85ae80d73359f4c0375150f5494161fb6fb
font_02_sfnt_off0000fd23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD23 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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