Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd1cb30901a33bf9…

MALICIOUS

PDF

78.8 KB Created: 2021-06-12 02:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 974e0489f27e34dea972b9957f3d40c0 SHA-1: c701e42d4c439181dd7bdb2af1fb3b0f924722c1 SHA-256: fd1cb30901a33bf9a72b15fff478ec32bd1495ba0dda9dd3e36de7af1430d019
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one prominent URL pointing to 'jumiwimov.ru' and a query parameter suggesting a lure related to 'Naruto anime modpack'. Heuristics indicate the PDF is a link farm on disposable hosting, and ClamAV detected it as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/123?utm_term=naruto+anime+modpack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485163/normal_6063ae843f586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461484/normal_5fc5c9dc1c11a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390057/normal_6008b04bd43c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_605c3a954bdb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470533/normal_6056d6f468b67.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
    • http://risuxujuvu.pbworks.com/w/file/fetch/144517317/delta_sigma_theta_membership_intake_process.pdfIn PDF document text
    • http://vedufid.pbworks.com/w/file/fetch/145163175/xexokegaruxidilufuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d92f4e3d-ed5b-45a4-acb7-6cab18b6c302/71082191183.pdfIn PDF document text
    • http://luwapoveduvi.pbworks.com/w/file/fetch/144515178/chammak_challo_full_video_song_hd_1080p_download.pdfIn PDF document text
    • http://furalagaposu.pbworks.com/f/80829233576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ded8ce-e147-4d7d-ad23-84a582b24fc6/muri_alfredo_palacios_estilista_biografia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f079d59-2bd0-444e-97a0-63e4cf77d6e2/dan_kennedy_copywriting_examples.pdfIn PDF document text
    • http://zolunegoli.pbworks.com/w/file/fetch/144736278/34103770500.pdfIn PDF document text
    • http://favixose.pbworks.com/f/negoxupuvarinim.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/w/file/fetch/144996441/83452604943.pdfIn PDF document text
    • http://sirazumebow.pbworks.com/w/file/fetch/145134387/coming_to_america_full_movie_123movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b01fc1-5eb7-4221-a890-b2c80b176561/78771759418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce3a47a-0596-4689-87a1-82b948a72478/pourquoi_me_reveiller_score.pdfIn PDF document text
    • http://magogopowo.pbworks.com/w/file/fetch/144460107/how_to_change_a_thermal_fuse_on_a_whirlpool_duet_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70d8338b-902f-4a66-a988-787f0bcd1c6a/pixinogamifolerutawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6854249e-9a06-42b2-835f-5b1261a17de1/govasumefizitivi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8ac39b9-04e5-4fd0-8afe-f0cec3124b86/bibusakinimolowaz.pdfIn PDF document text
    • http://ziduzobif.pbworks.com/w/file/fetch/144662937/30402382780.pdfIn PDF document text
    • http://dujimowiwup.pbworks.com/w/file/fetch/144998616/sirotibom.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_off0000e8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BE 4924 bytes
SHA-256: 463e800cb056f5aa8bb18422ad5d3751e84bfad029d8c5613f7efd41f08195b9
font_01_sfnt_off0000f966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF966 11092 bytes
SHA-256: 4a6b6ca306940fde00c0edb3545c96ff8c6cccb3f020b8748c80261f0e0f0a90
font_02_sfnt_off00011e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E78 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378