Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e63f0e3f2f96456…

MALICIOUS

PDF

40.9 KB Created: 2020-10-05 17:59:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cf5ce7a07d01a92fd38d5546af85a0d8 SHA-1: e6e358a86c4f213ff50f9b49f28ff10fb1d5bb1c SHA-256: 2e63f0e3f2f964561470da6d93ce185f7820cc248d202536b02e9e591e2cf06a
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=strength+based+approach In PDF document text
    • https://site-1039801.mozfiles.com/files/1039801/39092821185.pdfIn PDF document text
    • https://site-1036630.mozfiles.com/files/1036630/lufek.pdfIn PDF document text
    • https://site-1039491.mozfiles.com/files/1039491/97800582547.pdfIn PDF document text
    • https://site-1036728.mozfiles.com/files/1036728/74919513947.pdfIn PDF document text
    • https://site-1040171.mozfiles.com/files/1040171/fimelewukir.pdfIn PDF document text
    • http://files.nanscateringmorris.com/uploads/1/3/1/4/131437308/535142.pdfIn PDF document text
    • http://kelunod.1boxonline.com/uploads/1/3/2/7/132740900/jomuborilobo-xuvoro-bazapozebiloxuz-niriwezexur.pdfIn PDF document text
    • http://files.mrdelgado.ca/uploads/1/3/1/0/131070723/wuzedisinofabox.pdfIn PDF document text
    • http://sukoneruf.mediterrania-iron.com/uploads/1/3/1/4/131407082/419280.pdfIn PDF document text
    • http://files.athensprep.org/uploads/1/3/1/3/131380870/vukaga.pdfIn PDF document text
    • http://nivibizo.coachschillhoops.com/uploads/1/3/0/7/130739751/majelik.pdfIn PDF document text
    • http://wefiw.tinkersgardenminiatures.com/uploads/1/3/1/4/131407316/78cd4a531442ea.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/3177056400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5683/1395/files/mediation_and_moderation_psychology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3110/8504/files/fadekape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/drakorindo_hospital_playlist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1317/6469/files/absolute_value_equations_and_inequalities_worksheet_answers.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_off00006289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6289 5544 bytes
SHA-256: f17cc68a7a60fbbfdaabff94c3e7f269eab4428d16def8810b5283cfb1852347
font_01_sfnt_off00007554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7554 9780 bytes
SHA-256: da7d1e8bed021e10da6ba35fb8dda22ad9f6e85fde88aef225a1bb802f13727f

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