Malicious PDF — malware analysis report

Static analysis result for SHA-256 afe984e12697a57c…

MALICIOUS

PDF

80.8 KB Created: 2021-03-13 16:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f39455759ad5e94805730e2cc7260452 SHA-1: 0eabeec8b084c81ce6a8a1ba085567b26acb9696 SHA-256: afe984e12697a57c099cad417158b5f61255dadb681e084f16e0a6945ad8d500
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document contains numerous embedded URLs, with a prominent one pointing to 'jottigo.ru', which is likely part of a phishing or malware distribution scheme. The PDF structure and embedded content suggest it's designed to trick users into visiting external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/award?keyword=capellania+juvenil+pdf PDF link annotation
    • https://cdn.sqhk.co/rubovadu/l0jPAeV/wimagavitetogenepokiwaseb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481839/normal_60271abde341f.pdfIn PDF document text
    • https://cdn.sqhk.co/nimotixalulo/jhhicyW/super_cars_hd_wallpapers_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/budatumibowu/3YhgbyB/60716706265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_6031eff6d0979.pdfIn PDF document text
    • http://matras-24.ru/pipajexixovi1y8.pdfIn PDF document text
    • http://detonic-buy.website/mikelinozikujimo4zcjc.pdfIn PDF document text
    • https://cdn.sqhk.co/mawedabe/4ieRKid/tafunorevaxeginulegik.pdfIn PDF document text
    • http://topuniversityru.fun/computer_network_technician_salary_in_canadabvc13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_60305c2c75d84.pdfIn PDF document text
    • https://cdn.sqhk.co/sepokafaru/igtyjjb/wwe_shop_coupon_code_2019.pdfIn PDF document text
    • http://xurufotuzu.iblogger.org/guide_rail_running_shoes.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/eu4Qiju/nalas.pdfIn PDF document text
    • http://stassikorskyi.com/life_is_a_crazy_journey_quotes56l25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420434/normal_5fc64c640bf4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410222/normal_5fd0391e1b501.pdfIn PDF document text
    • http://natlegend.space/cute_wallpapers_for_laptop_disneyxteju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_43188a5ddc964ba9a537b49043c1d882.pdf?index=trueIn PDF document text
    • https://f6180879-d31b-499c-8e42-fead7842c491.filesusr.com/ugd/007227_60fb073384d34623ad2e42c1e12363a7.pdf?index=trueIn PDF document text
    • https://d6b7b3c7-8429-4d82-9d75-5d5d09e763cc.filesusr.com/ugd/a8c229_e144b27fbe4b427ab4594cfe7e15856a.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_dc2682230dbc4c51b219fe154ae7b9fb.pdf?index=trueIn PDF document text
    • https://54c00800-e679-4366-bb5f-6c4fe2fc45d7.filesusr.com/ugd/3bcfef_c0ad464549c14bbd87d230b5855bc681.pdf?index=trueIn PDF document text
    • http://ragakinetepufub.epizy.com/67079871478.pdfIn PDF document text
    • http://maligufaribez.epizy.com/firepower_2130_asa_datasheet.pdfIn PDF document text
    • http://nilavoforejexo.rf.gd/poxutofebemibexixo.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_off0000fd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD31 4804 bytes
SHA-256: bd20d392323177f2f25fb975910e09539e40874ca4282d42fe5b303a9a358afd
font_01_sfnt_off00010da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA8 11996 bytes
SHA-256: e07cee6092ba31d25983356ba4d2f8625b994d7a0447bfcba55b11a6d4aa1dbf

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