Malicious PDF — malware analysis report

Static analysis result for SHA-256 63a6e5a40ec88152…

MALICIOUS

PDF

89.4 KB Created: 2021-03-15 06:29:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7ab4feb4bcc8783a434f206c4e38c41f SHA-1: 9787863948e5a5b74365e32cbdfc7c0dd411402c SHA-256: 63a6e5a40ec88152477f0486d3b1d4d395c59650869f5df314a5c3bcd6bd09c1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=cours+et+exercices+corrig%25C3%25A9s+d+atomistique+pdf PDF link annotation
    • https://cdn.sqhk.co/vedimofaw/eVHhcja/kijulaweguweburesizeza.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/fRChfjg/counter_terrorist_win_sound._mp3.pdfIn PDF document text
    • http://lelazuw.iblogger.org/brandy_melville_gift_card_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/fjfhcha/41077110997.pdfIn PDF document text
    • http://boraguw.medianewsonline.com/46789750212.pdfIn PDF document text
    • http://pezuzumosuxuku.22web.org/gelovumogufi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427105/normal_5fccd9ffcf3bd.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/ggnjfib/57093198762.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/65528767709.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/walmart_grocery_wont_let_me_add_to_existing_order.pdfIn PDF document text
    • http://revodegasiger.sportsontheweb.net/2765444239.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/djhjcIc/18445613936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528780/normal_602a6f5ae95c5.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/52a5b207-1afd-4e3b-b04d-c2e0ef9f9b79/shark_nv501_price.pdfIn PDF document text
    • http://tavoxelelenasi.onlinewebshop.net/11223814921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90bd2aa4-da0d-457b-bf3d-e9f746d2527e/what_is_the_domino_theory.pdfIn PDF document text
    • http://mezubivedoxida.epizy.com/evil_dead_3_full_movie_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/498e6f99-3e53-45e5-a63a-04e4b64bee44/what_are_the_different_types_of_business_structures_and_organizations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaf0ccc8-a9d1-4609-beb2-822833586f21/13937063505.pdfIn PDF document text
    • http://vezuzatutuxi.epizy.com/math_models_with_applications_answers.pdfIn PDF document text
    • http://lujifub.epizy.com/puvejuxola.pdfIn PDF document text
    • http://lebozid.epizy.com/51552655760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc01b5f-1d12-407f-b934-fd52b0546318/42563390544.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_off00011994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11994 5684 bytes
SHA-256: 3125c200a50db26d2aad6be876b526ccd7d5b06cb06716bce4b70b922fea2eac
font_01_sfnt_off00012c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C8D 12400 bytes
SHA-256: 08f8e3afc1853c6e7ef67ab3c8cd82295d5393f9e94d3fdf8908c4a66cccb9d7

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