Malicious PDF — malware analysis report

Static analysis result for SHA-256 81bd296e73424604…

MALICIOUS

PDF

73.2 KB Created: 2021-03-06 02:35:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b6e20a4ff726b9ce6dd77c528715c248 SHA-1: 3af4f6a413be6e80f9e606f07808fce5625ed9b4 SHA-256: 81bd296e73424604072a93ebf07e629e0b1634a75d0b06c2b80f2e1c7b120a9b
126 Risk Score

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://fokemale.ru/award?keyword=does+officemax+do+computer+repair PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451350/normal_60057f193cda2.pdfIn PDF document text
    • http://wovobogawukepu.iblogger.org/zadalizaxanabin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527164/normal_5fc6bf2b387aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454547/normal_5fd71e56e3b26.pdfIn PDF document text
    • http://kukuginori.22web.org/62908714305.pdfIn PDF document text
    • http://kemamibuke.mygamesonline.org/the_wind_in_the_willows_watch_online.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/t_fal_optigrill_customer_service.pdfIn PDF document text
    • http://kiwenalod.medianewsonline.com/53666490887.pdfIn PDF document text
    • http://remalizaf.iblogger.org/98945028270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405459/normal_5fc5e1bb45e17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459060/normal_60055d30908d7.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/why_mortgage_interest_is_tax_deductible.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/what_is_another_word_for_all_the_best.pdfIn PDF document text
    • http://metoxegid.mygamesonline.org/jenn_air_range_top_with_grill.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/samsung_galaxy_s9_new_price.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_996665bf813f4a40ac9bce7f14972d6a.pdf?index=trueIn PDF document text
    • https://dd3528e8-ded0-4753-843e-0d3cb9f542e7.filesusr.com/ugd/4d6844_c9be24d7b349495b87ea8eba0b770545.pdf?index=trueIn PDF document text
    • http://zewesibapinite.epizy.com/88106241859.pdfIn PDF document text
    • https://cb2d4818-2134-4ea5-ae57-1bc45cfc4292.filesusr.com/ugd/7e787c_4256d613b2964bc19561fec5791c46c1.pdf?index=trueIn PDF document text
    • http://fujirezidixivu.rf.gd/25709801876.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/where_does_ap_take_place.pdfIn PDF document text
    • https://29474179-7c7c-44ae-84e0-3c37792f2e25.filesusr.com/ugd/7f817d_b683709b1e1340d79628aa0930522a97.pdf?index=trueIn 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_off0000e0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EB 5336 bytes
SHA-256: 2f887401df6ab792ed5efea0cc6e4acb81b521556a7ada83b3fa464bd4b55ba2
font_01_sfnt_off0000f306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF306 10512 bytes
SHA-256: a69da24ababaa399b5dcea8700ec38cd4dbf1dbdfb0e66a0105906f9cd219d80

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