Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc298d2633c606f3…

MALICIOUS

PDF

73.7 KB Created: 2021-04-01 23:54:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8f96ea83082132c4dbb2cffabde29d15 SHA-1: 85a37dac95979d9285e53022d049d7a3ab1a0fe1 SHA-256: dc298d2633c606f3133b1abfbfdef2218778b92e9a485c65f4f41e79f158b757
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a 'free playboy perfume sample' lure, aligning with the suspicious URL.

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://pelibifir.ru/aws?utm_term=free+playboy+perfume+sample PDF link annotation
    • https://jadivamanug.weebly.com/uploads/1/3/4/8/134868371/fe0f2e6.pdfIn PDF document text
    • https://jeregixir.weebly.com/uploads/1/3/1/3/131381720/riwofoga.pdfIn PDF document text
    • https://vunisanelebori.weebly.com/uploads/1/3/3/9/133999195/zedurifuzar_paragomodebilu_wogubu.pdfIn PDF document text
    • https://cdn.sqhk.co/juputufom/S6jjgeU/pefenisigolasax.pdfIn PDF document text
    • http://vamoktin.ru/kowubotekevyf5.pdfIn PDF document text
    • http://didavixakodix.22web.org/jakuradasaze.pdfIn PDF document text
    • http://goodik.fun/bricks_breaker_mission_level_2067db4o.pdfIn PDF document text
    • https://cdn.sqhk.co/jivazufevi/f7if7C7/2019_can_am_defender_hd5_specs.pdfIn PDF document text
    • http://pribor-poverka.site/siwuk7v6hn.pdfIn PDF document text
    • http://contact-git.top/47990943528b9t44.pdfIn PDF document text
    • http://zabavnyi-slon.ru/badadivonuforegavltmq.pdfIn PDF document text
    • https://finamiwowekizo.weebly.com/uploads/1/3/2/3/132302732/2663542.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/ef8659a5-fd79-4b49-9f69-af993e7d5de9/74527835218.pdfIn PDF document text
    • http://kebitux.epizy.com/11044679659.pdfIn PDF document text
    • http://jopiliseduvorop.rf.gd/rojupumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/184d781f-b8de-45eb-922c-c372da8373f1/how_to_write_a_sales_pitch_script.pdfIn PDF document text
    • http://jusakurufawotol.rf.gd/cataratas_del_niagara_canada_informacion.pdfIn PDF document text
    • http://sasinazubusun.epizy.com/dolel.pdfIn PDF document text
    • http://vivemowirarok.rf.gd/fuwekikukomuwibizemifet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b55e3831-00c0-489a-9e63-1897299910ee/dugokufelikaruv.pdfIn PDF document text
    • http://kegotetebam.epizy.com/express_publishing_upstream_b2_workbook_answers.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_off0000d73f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD73F 4892 bytes
SHA-256: 80e02c3ba3a29917720e3a7294320d95ebeaf6061806727f83858deb6a737048
font_01_sfnt_off0000e7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E3 10476 bytes
SHA-256: 93c9c355d8f7f87454c6c285f85bab540c4f77fb68d2089543675bdb7833014a
font_02_sfnt_off00010ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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