Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f34d191a297309…

MALICIOUS

PDF

68.4 KB Created: 2021-03-26 19:28:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4371b1ea27b62d5a6800318b7b96c090 SHA-1: 5935f9b096a64e8f3503304cea4455681a72f85e SHA-256: d5f34d191a297309ea0eaf339f242ea801d5818da202f0d30242a6750b2eb8f5
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

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://zajinet.ru/wix?keyword=rust+legacy+servers+2020 PDF link annotation
    • http://stopnutristrike.ru/explosion_box_template_free_svgb03wp.pdfIn PDF document text
    • http://ketosimple.online/44613655390jlf2.pdfIn PDF document text
    • http://sait-ok.ru/a_song_of_ice_and_fire_characters_neds_daughterv94hj.pdfIn PDF document text
    • http://zuvels.xyz/biography_hollywood_movies_free4bxla.pdfIn PDF document text
    • http://tilosag.mypressonline.com/12791362591.pdfIn PDF document text
    • https://jonolepazom.weebly.com/uploads/1/3/4/5/134520471/lupivukete-rukuninakafis-wamutozopexoja-kaxileso.pdfIn PDF document text
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/batedazo.pdfIn PDF document text
    • http://probmaka.tech/antibiotics_simplified_4th_edition_freer6f72.pdfIn PDF document text
    • https://fubagodesipura.weebly.com/uploads/1/3/4/3/134326772/711f055664fc.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/54144303743.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/hillsborough_city_school_district_salary_schedulenhgd3.pdfIn PDF document text
    • http://medicinfo.online/gikiruniwanogigi2shtr.pdfIn PDF document text
    • http://yewes.space/636208960578ph4e.pdfIn PDF document text
    • http://electorat.org/podilegypsn7.pdfIn PDF document text
    • http://kvyovk.xyz/89430512678btb93.pdfIn PDF document text
    • http://my-favshopf.online/zatekoturuvajejanuga0hzj8.pdfIn PDF document text
    • http://tiktokfrance.fun/furitovuibz1.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/epson_v700_photo_scanner_manual55cya.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e42ce0b3-f376-4cb5-9abe-507fdbb9570c.filesusr.com/ugd/603474_943fef0559424b17852ea49d15e6452f.pdf?index=trueIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_6ab03584adce4d348c24b2bff8ad7882.pdf?index=trueIn PDF document text
    • http://femagela.myartsonline.com/71229909143.pdfIn PDF document text
    • https://24218389-b518-4ca3-8548-65eaf758daa4.filesusr.com/ugd/c836c3_da1a9abea6924496a681a35ad94064e1.pdf?index=trueIn PDF document text
    • http://vumovofun.onlinewebshop.net/bengali_english_calendar_2020.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_off0000cb3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3B 5412 bytes
SHA-256: c91f4d3de14990ff37072cbab46f7dbfe91869a0e781cc02d3e887c368ee4810
font_01_sfnt_off0000ddc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC3 11420 bytes
SHA-256: 4cdd31125040a08304f280eb8fe0293c581c790681a9f41fc01814809a58cd37

Open this report in the interactive analyzer, or submit your own file for analysis.