Malicious PDF — malware analysis report

Static analysis result for SHA-256 a188c28e07cb5746…

MALICIOUS

PDF

73.9 KB Created: 2021-05-12 03:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b31b78c6c7c7251077ad319f40dc4ad5 SHA-1: 6a2218c8625e960e6d5ae08e45caabd11fa37d35 SHA-256: a188c28e07cb5746999b0f3d81e027a1a51d9d343abc00933681530fe9913c28
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://bologen.ru/strik?utm_term=what+is+the+author%2527s+purpose+in+ain%2527t+i+a+woman PDF link annotation
    • http://lighterusb24.site/nostalgia_mini_retro_popcorn_maker_instructions6266c.pdfIn PDF document text
    • http://joxitikoki.getenjoyment.net/92213029459.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/icgfgZs/how_to_find_bitcoin_wallet_address_cash_app.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/sunsetter_awning_sales_near_mebmu3x.pdfIn PDF document text
    • http://devicesprotectionforusers.site/ipad_mini_2_release_date_ios38c5q.pdfIn PDF document text
    • http://brosbass.com/sezilidovamicfqow.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/danby_premiere_12000_btu_portable_air_conditioner_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vizoxaxijojo/oQeiiii/dale_vida_a_tu_cerebro_epub_gratis.pdfIn PDF document text
    • http://merishwheelrecords.com/tezugotagef6lwj.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/Fvjbjg3/pefowagiv.pdfIn PDF document text
    • http://mowukedova.mypressonline.com/9343167124.pdfIn PDF document text
    • http://rotirir.mypressonline.com/mexejerajizixiw.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/e80a345d-45e3-40f4-97e5-780d8207f3ad/nekutatijazejelepatupisus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c10b08eb-1c05-46e8-9a88-c51878e04852/86278865527.pdfIn PDF document text
    • http://doriponesarom.myartsonline.com/fufezavozupapumojubovot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/284be415-29e8-48e0-b477-3054cc8e2de5/xitigerejuzusarelawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6194d7aa-3fe4-42f5-ac8e-43b1b3f30b25/what_kind_of_fast_food_is_gluten_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5424994a-0e6f-44f7-9937-b598ab9149f3/53234174818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c55c9149-017d-4cd7-8772-f95e0bb41e86/security_analysis_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638896bf-f1cb-4053-8974-4b45173fc483/best_physical_science_textbook_grade_12.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e53d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53D 5168 bytes
SHA-256: 3ce784ceef2347cb5e02ceab903fa74377d055416d8c7237600230ad94cc164d
font_01_sfnt_off0000f6bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BF 10304 bytes
SHA-256: 0f991704a4c9577984b3171cbaf317c724c527cbec8c4bb82cf01078fb55352d

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