Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19f1b68c0164306…

MALICIOUS

PDF

170.9 KB Created: 2021-03-27 20:12:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 26cf6d60da13ad91ef837a53a7dab254 SHA-1: ef422145435b344ada357ddea57d0b8df828e3a6 SHA-256: c19f1b68c01643063d74033987f834dc337ec3a59896c47b6e714f73cecc4499
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. It contains an embedded URI pointing to 'https://mezovuduw.ru/award?keyword=lysistrata+text+pdf', suggesting a phishing or scam lure. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://mezovuduw.ru/award?keyword=lysistrata+text+pdf PDF link annotation
    • https://cdn.sqhk.co/furikute/jNCM65Y/los_paises_hispanos_worksheet_answers.pdfIn PDF document text
    • http://kanshoper.site/bejawafasukusosajewtdg6f.pdfIn PDF document text
    • http://im-marceting.site/60500394791oana0.pdfIn PDF document text
    • http://docita.fun/ruzerixidukamkhdqu.pdfIn PDF document text
    • http://itchia.space/fakogukekagopalevu84dnv.pdfIn PDF document text
    • http://podarokinsta.site/judupogapcx1o2.pdfIn PDF document text
    • https://cdn.sqhk.co/towojutal/cK05ieq/beard_club_growth_oil_before_and_after.pdfIn PDF document text
    • http://vekvelo.ru/nebanozowitotimw28l.pdfIn PDF document text
    • http://smeh-mif.space/hack_whatsapp_ultra_v_1.5_download_itatn94h.pdfIn PDF document text
    • http://istlan.space/22986012582rputc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4eb3a9b5-ca6a-4b2a-896e-878abc754f3b.filesusr.com/ugd/f1ab86_f9227b2a064e4a4697f60535bee27cb4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f615aff0-e698-4eb3-9a1f-a217a910b233/16708545638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58a7363c-d2b7-4230-b41d-54e9e0439b1f/what_is_the_purpose_of_bookmarks_in.pdfIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_73918cf2c902494da37ffe3ef5d4d33e.pdf?index=trueIn PDF document text
    • https://48bf584d-d56c-45cf-b4f3-c1c05dce5274.filesusr.com/ugd/3f4b99_27834b9a04c6483b8406815af2c37533.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/630f0ec0-aa38-4dc1-86cb-3a4d92482fdb/herman_miller_aeron_chair_size_a_b_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae5fb8bb-08f3-428f-b265-9f3df679e156/what_size_tires_does_a_2014_chevy_equinox_have.pdfIn PDF document text
    • https://c7f0abc7-d23b-482d-bd16-0771495bb668.filesusr.com/ugd/bb13a2_c803390d469a4aebb4c3875d50c7bb8b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bffd9ae0-5285-413d-b2ad-99969c092780/52187995429.pdfIn PDF document text
    • https://923a8ca3-316b-4844-b38f-9bc955ad4852.filesusr.com/ugd/312e0e_444069e086a44d60b33d803483f17b62.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/de3a9eca-24e3-4674-a010-7e7424c50a09/woxesupadupilo.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_off000264a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x264A7 5116 bytes
SHA-256: 5ee399decf4631e6da54ad28adf17aee20cd11ee8c61137524dfa13a4103b7ca
font_01_sfnt_off0002762f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2762F 11520 bytes
SHA-256: 65ea93e1875615b61f3d7a7f83e7fdab54953c77c548e595c567c2979a180abb

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