Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e1eb75ef98e1aa…

MALICIOUS

PDF

80.2 KB Created: 2021-03-15 21:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 09cd4d19ec6b52dbb184634ebd20521d SHA-1: 4746de434d898181c500c946830907211ada3dd2 SHA-256: 47e1eb75ef98e1aae7b5ca490ec4c0d143e1aeb0e71ac8862ba49aa395f42a08
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a high concentration on disposable hosting, indicating a link farm designed to obscure the primary malicious destination. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious documents that leverage embedded JavaScript to redirect users to malicious sites.

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://lozipotod.ru/123?utm_term=chapter+33+va+form PDF link annotation
    • https://buzufurabobozu.weebly.com/uploads/1/3/5/3/135304208/notolonudomuxow-zozixofadivawi.pdfIn PDF document text
    • http://maslovauto.ru/mudemaniwitunac0cqc.pdfIn PDF document text
    • http://xiravudes.22web.org/62517936222.pdfIn PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/lozutedozikom-govafil-mevofovopisuvir.pdfIn PDF document text
    • http://rovepofaji.22web.org/48987513640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5fcf369c7a5d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473938/normal_6027c4bd1faee.pdfIn PDF document text
    • http://ig-support-service.com/juwinuletinke60.pdfIn PDF document text
    • http://heliusdesign.ru/advertising_and_integrated_brand_projnbn5.pdfIn PDF document text
    • http://indonesia2health.online/5586278943y2lnx.pdfIn PDF document text
    • http://getchambre.xyz/how_many_calories_in_taco_bell_breakfast_quesadilla9rkc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ripivetozevulu.epizy.com/47098912139.pdfIn PDF document text
    • http://pazalijof.epizy.com/joiners_movers_leavers_policy_template.pdfIn PDF document text
    • http://fomobiwudaz.rf.gd/savegelevuzavenamez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c397f31-7c89-42b5-82b6-1b5e7892ad33/what_causes_infj_personality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ca9172e-2e6c-410c-b852-b933d1be52ad/how_long_to_study_for_nasm_exam.pdfIn PDF document text
    • http://jijabivu.epizy.com/72845104406.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fadf47c-4ac0-423e-8eaa-5e1e2b88f1e2/america_the_story_of_us_episode_12_millennium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d57ea705-fa4a-4da9-8285-a57aa23cc170/the_greatest_salesman_in_the_world_by_og_mandino_summary.pdfIn PDF document text
    • http://golizewojavizav.epizy.com/dururikezi.pdfIn PDF document text
    • http://siwojanapav.epizy.com/talking_tom_game_apkpure.pdfIn PDF document text
    • http://jedenibiripo.epizy.com/luliwupugajorukoxipur.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_off0000fce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE1 5060 bytes
SHA-256: 70ab1a375d1311c31575c5a51971c18489575adc9646cd032edd52c05aa2cfc5
font_01_sfnt_off00010df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF6 11268 bytes
SHA-256: 3c81d00375aa6e87846797f438222cacdcb77a6a8caaa59590f9e516e94872ee

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