Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad29426a4662495f…

MALICIOUS

PDF

85.4 KB Created: 2021-04-14 14:04:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f38182e42981b0adba0007024f63b80b SHA-1: 5b8c09a6d810765c81c403f9455c89dd8f4f7dcb SHA-256: ad29426a4662495f5fe2f721f28b510376073c05481ae36c47b6a006028335aa
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/strik?utm_term=gardner%2527s+art+through+the+ages+15th+edition+volume+2 PDF link annotation
    • http://pavozuketogo.mygamesonline.org/wamika.pdfIn PDF document text
    • http://tlgfree.xyz/silidiwop3ba.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jeFjgjh/motogeva.pdfIn PDF document text
    • https://cdn.sqhk.co/faruzikako/LDjhKjd/50130247120.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/chinese_restaurant_menu.pdfIn PDF document text
    • http://verification-help.com/how_to_make_friends_dog_and_cat0uu9v.pdfIn PDF document text
    • http://kieverts.xyz/modified_functional_ambulation_category_scale2y966.pdfIn PDF document text
    • http://midunetojonawiw.mywebcommunity.org/36815513167.pdfIn PDF document text
    • http://lenusabipowezo.getenjoyment.net/36874378555.pdfIn PDF document text
    • http://soluzixod.66ghz.com/grounded_theory_a_practical_guide_2015.pdfIn PDF document text
    • https://cdn.sqhk.co/fokofike/igggejf/lijisubug.pdfIn PDF document text
    • http://fojefojegut.medianewsonline.com/bu_ali_sina_books.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/jioxjai/nintendo_switch_games_top_list.pdfIn PDF document text
    • http://tells.fun/tebavugewanunosisosudu37n.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/4fN5hfu/reaper_pickaxe_fortnite_costume.pdfIn PDF document text
    • http://kajuzumanaz.sportsontheweb.net/statistical_methods_and_their_applications_2_notes.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/4ff9c794-0cb4-4ac6-a33a-c97728d285f8/90849876629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e8aee71-99d7-40f4-8927-c48590c52e64/77171276208.pdfIn PDF document text
    • http://jisijuvod.myartsonline.com/asuhan_kebidanan_abortus_inkomplit.pdfIn PDF document text
    • http://pixoriwabivonol.rf.gd/gamitojoderizuwo.pdfIn PDF document text
    • http://wixuwozovezo.rf.gd/fisiopatologia_do_cancer_de_colo_de_utero.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/calendario_escolar_2020_20_sep_mexico.pdfIn PDF document text
    • http://tuganireriwem.rf.gd/lonely_planet_spanish_phrasebook_app.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6C 5672 bytes
SHA-256: 5274897c7513134a033819e460a63c5ff5f95c2a8b931c9df2b5b4d00d6179c0
font_01_sfnt_off00011ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA8 12004 bytes
SHA-256: d79c0f8843e9ab3cb0bef24e791a8f9e3e23c5b610860ed9c43d05eec3415cf8

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