Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee7b6a03ba60fbd4…

MALICIOUS

PDF

79.0 KB Created: 2021-03-29 07:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bfee47897235cf67a66e4bd2397e757c SHA-1: aa501474c7921af78787bcae0ce081bf5de939b3 SHA-256: ee7b6a03ba60fbd45729fa11a2a84e77875f3ce9dd52a179995ab3b09c729ee8
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing trojan. It contains a large number of external links, many pointing to disposable domains, characteristic of a link farm or SEO poisoning attack. The primary URL identified is https://mezovuduw.ru/wix?keyword=lump+top+of+foot, which likely serves as a landing page for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/wix?keyword=lump+top+of+foot PDF link annotation
    • http://lorakuze.sportsontheweb.net/xadopuwaleba.pdfIn PDF document text
    • http://lebedugipul.mywebcommunity.org/insinkerator_garbage_disposal_evolution_excel_lowes.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/6Fhhjbw/samsung_accessory_service.pdfIn PDF document text
    • http://rapoxarawiwalo.sportsontheweb.net/96460345901.pdfIn PDF document text
    • https://cdn.sqhk.co/budatumibowu/hjjjhjf/gasitipolu.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/hggiijc/top_100_free_to_play_games_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/gederanew/ihiInJe/thrift_savings_plan_charts_and_returns.pdfIn PDF document text
    • https://sizuzevejej.weebly.com/uploads/1/3/3/9/133997482/62d3a0.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/3jiggij/waves_tune_ableton_live_9.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzojivemepe/giihahf/63656803305.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/haibia9/28079581726.pdfIn PDF document text
    • https://wutuzorul.weebly.com/uploads/1/3/5/9/135963099/3566952.pdfIn PDF document text
    • https://cdn.sqhk.co/wadusazilox/5Nigijh/41297501295.pdfIn PDF document text
    • http://jenuxijaf.mygamesonline.org/bacaan_doa_sholat_dhuha.pdfIn PDF document text
    • https://cdn.sqhk.co/fagisuxupinu/agfw8ig/glorious_eleven_football_manager_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosudav/fFHhgjc/netflix_series_ratched_cast.pdfIn PDF document text
    • https://likunemotiro.weebly.com/uploads/1/3/5/2/135299998/1310525.pdfIn PDF document text
    • http://lologunaw.mygamesonline.org/mothers_day_special_inspirational_quotes_in_marathi.pdfIn PDF document text
    • https://goxapuvuf.weebly.com/uploads/1/3/2/7/132741714/4911154.pdfIn PDF document text
    • http://sadipize.scienceontheweb.net/vigikiredilema.pdfIn PDF document text
    • https://polisurev.weebly.com/uploads/1/3/0/7/130740145/jezebox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8d366d5-0861-4d41-98ad-77d96e742893/is_health_economics_a_good_career.pdfIn PDF document text
    • http://gapoxuvopa.onlinewebshop.net/aha_acls_algorithms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec5d792-2d6a-4ecb-bdd4-622c078e0a2a/c_programming_language_book_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3fe2b3-f5c1-4b18-91e0-08b192948ab5/kitchenaid_artisan_mini_stand_mixer_matte_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e36466f-0f31-47f5-bd8c-e95c0e9e112c/guardian_underground_fence_installation.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_off0000f924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF924 4472 bytes
SHA-256: 68408f9b8fd6c83f9037341452f05ac59b04553cfd80f7d468f4fb43a5aa87cb
font_01_sfnt_off0001085c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085C 11712 bytes
SHA-256: 00f18dceb301232a650832fa2a0e6c58678c315697dd531464dc573a1a859832