Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa5a753220b1989…

MALICIOUS

PDF

82.8 KB Created: 2020-12-07 07:05:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 46c9f4e2aa25046fb631b7bba40fd498 SHA-1: b60b626202fda454037b30a34434b0a7d960036f SHA-256: 9aa5a753220b198944b499c95cf918be1ed009eb1924b6292eb77fa39ddbd42a
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://trafffe.ru/123?utm_term=patrice+oneal+wife PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472185/normal_5faa304c377cd.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/9827615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_5f90e3526294b.pdfIn PDF document text
    • https://fowalafe.weebly.com/uploads/1/3/4/7/134722097/9738386.pdfIn PDF document text
    • https://lavigumujow.weebly.com/uploads/1/3/4/4/134438710/fotapusowogino_potif_bigolojusiro_xudep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481420/normal_5fbe583c2efc4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4deb088c99b6d37c0af76/t/5fc51f26f8cdb769c686f92f/1606754087680/bob_evans_menu_nutritional_information.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d725147b14804298c71/1606372727715/universidades_de_washington_d_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2cf1e42-ba8c-4323-92e3-64c833172b1a/lady_and_the_tramp_birthday_gifts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48122824-fd69-4254-a86b-a780d6881cf2/la_casa_de_los_dibujos_en_ingles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a825a13a450babff6b59/t/5fc52fcbeaf37e3b6444216f/1606758349319/the_learning_academy_of_teton_valley.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc289bc24b06a7eb309ae07/t/5fc788140791337046e8065f/1606912020471/ruzikigawes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73842d71-58da-4b54-9dd0-5c91ac0a52c9/grateful_dead_help_on_the_way_guitar_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c57d3da-fd80-42bb-91bf-9254f3979e4f/kud_puklo_da_puklo_sve_epizode_online_za_gledanje_sezona_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3050145a8629dc7b34b2/1606299729747/30398405575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c32f66a-6e6b-46b3-b782-81449358f131/the_portable_jack_kerouac.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_off00010974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10974 4792 bytes
SHA-256: b3d7ad2a364f47e823d9f90d195a73c9f9a96ee17dead46ef0367b3370df347c
font_01_sfnt_off000119e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E5 10636 bytes
SHA-256: 459023682b7a7b57ea8ffbf6d583abb12aa408f8796488888f497e6073f53d1a

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