Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e025a9e9068253…

MALICIOUS

PDF

71.4 KB Created: 2021-03-07 00:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9cbd1ea3611d8373725de2ccf20f34b0 SHA-1: b804933d7800c6f4fdf57618adf539f5d74d3d73 SHA-256: 89e025a9e90682530e1a09398b0718a6a55edecc07296e1163617f1c6d126759
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/award?keyword=candidate+elimination+algorithm PDF link annotation
    • http://tijukilebag.getenjoyment.net/vesanaravulevesofozegiwo.pdfIn PDF document text
    • https://cdn.sqhk.co/busosuwik/i9ggUjj/tifaputelorunidokujor.pdfIn PDF document text
    • https://pagilosotutan.weebly.com/uploads/1/3/0/9/130970008/97f5bf413a99886.pdfIn PDF document text
    • https://laxuruvu.weebly.com/uploads/1/3/1/4/131482832/3400771.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/63828636674.pdfIn PDF document text
    • http://fepemewavitik.66ghz.com/25581335228.pdfIn PDF document text
    • http://bisipatelaloguj.66ghz.com/synonyms_antonyms_homophones.pdfIn PDF document text
    • https://cdn.sqhk.co/fagiseregu/hghdjcb/vector_security_camera_login.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/ZRhaC0O/17437010618.pdfIn PDF document text
    • http://ruwosiju.getenjoyment.net/explain_how_humans_depend_on_the_environment.pdfIn PDF document text
    • https://xidekudogigut.weebly.com/uploads/1/3/4/6/134683706/nudipite.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://46d16763-6c5f-4e19-aa2c-3f4071fcbec2.filesusr.com/ugd/26f730_0918e81d93d747c79d5a0ed1a72d24e0.pdf?index=trueIn PDF document text
    • http://sonisan.epizy.com/32360815403.pdfIn PDF document text
    • https://899154e9-876a-4ab4-94d5-c8ef2aed10f2.filesusr.com/ugd/dcf9ad_1874583c7cd141fa8d67017b8215403e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pulavokaxe/39556635426.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/dj_remix_asmara_nungguin_ya.pdfIn PDF document text
    • http://kiluwemu.rf.gd/wixizaxawuxutup.pdfIn PDF document text
    • https://caa91486-5fcc-43b7-8b2b-5b817ae85bbe.filesusr.com/ugd/26bbcf_f1bcfd1d982b4d7ba259902c317849e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/zijob.pdfIn PDF document text
    • https://doi.org/10.1007/978-In 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_off0000dba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA6 4968 bytes
SHA-256: 16d1b9f8f2ce4dc457687640cf2fabf8818595abc4c5d09c7829cafa341a49b5
font_01_sfnt_off0000ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 10444 bytes
SHA-256: d1e75a5d6d5e3822fe600db4b38fa9e09d7469d01fa15a7768adcf3ca698e025

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