Malicious PDF — malware analysis report

Static analysis result for SHA-256 059371272c4235c9…

MALICIOUS

PDF

72.0 KB Created: 2021-03-31 04:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 51358d44cfe14649ca0b153f736908e0 SHA-1: 59d1422f41b6d05485757f83e576b3a38da152c7 SHA-256: 059371272c4235c9e305ddbf31a24d34aa20afcebb3c0e5ac85171ccbbbc98ea
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to host malicious content or phishing pages. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://baarspo.ru/award?keyword=gmo+products+pdf PDF link annotation
    • http://fumatiw.mypressonline.com/41809867337.pdfIn PDF document text
    • http://leopolds.space/alpine_ktp-445u_manualmyj0y.pdfIn PDF document text
    • http://gutezazotogilup.22web.org/rosutepu.pdfIn PDF document text
    • http://zazutokanug.22web.org/cadillac_xts_2016_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_6063b823ca3d7.pdfIn PDF document text
    • https://japipimimobuxi.weebly.com/uploads/1/3/1/0/131071183/5ee4445b9d80b02.pdfIn PDF document text
    • http://fejiximodanu.mygamesonline.org/fur_elise_piano_music.pdfIn PDF document text
    • http://pezesukuju.iblogger.org/phonics_assessment_free_printable.pdfIn PDF document text
    • http://trysoda.pro/mixotelivarizapsikbq.pdfIn PDF document text
    • http://dapovevi.mywebcommunity.org/jifadug.pdfIn PDF document text
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/0a22c605f7d763.pdfIn PDF document text
    • https://xetakafiso.weebly.com/uploads/1/3/1/8/131856826/galomibular.pdfIn PDF document text
    • http://rufujatev.iblogger.org/zodexuridiles.pdfIn PDF document text
    • http://dezlice.ru/9891524350347jai.pdfIn PDF document text
    • https://nudezodubazez.weebly.com/uploads/1/3/1/1/131164524/degidubefopito-xozuxa-padoxasapex-vofuvaro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403283/normal_6009f07f3e409.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/95d9bc75-afe0-4aab-918c-ce5ee90c58ab/904440660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/418f9445-283f-470b-b1d8-d8eb77242f2b/95514132142.pdfIn PDF document text
    • http://zusozokag.epizy.com/runalofubaweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9ed39ca-6d94-4d6f-b251-4a62767d769a/prym_sock_loom_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3bfd0b6-8fbb-4e47-9f6a-101b6e02dd06/how_to_calculate_gdp_deflator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83aa80c0-78c2-464d-b916-689e3c0e7f88/vuvazorozawilexexelab.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_off0000cfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA5 4700 bytes
SHA-256: 16469de364a732e515a1bbd1e8b7b5b95d2e53cfe3381ca00e70e946555b3017
font_01_sfnt_off0000dfa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA4 10492 bytes
SHA-256: 41da9c89dcd98a257a7bd2c5dc21171dc84fe8f5b2ed2fe6a78705e8eab47bd4
font_02_sfnt_off0001037c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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