Malicious PDF — malware analysis report

Static analysis result for SHA-256 316260eb4c29259b…

MALICIOUS

PDF

50.2 KB Created: 2020-10-25 20:18:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 638639520f7b667f6fae3304b79fc86a SHA-1: 6c70e18f0d2fcc624e6785d979a2b1b0520c8344 SHA-256: 316260eb4c29259b51c664cc82e46199df8198214edb700aa25af1e8ee3ee2ce
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/pify?keyword=internal+growth+strategy+pdf In PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/buduxofupigolov.pdfIn PDF document text
    • https://jomitapekox.weebly.com/uploads/1/3/4/3/134319499/nerid.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/lanesesubixata-ruxisodufuset-tofuwaxe-ruteko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f94c2c364606.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370068/normal_5f93d650a41c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370737/normal_5f929f71c6104.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379486/normal_5f8e05cbe23a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87a3cb99a10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5f90607d58276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5f8e40ee58316.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000842b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000842b.bin)
    • https://uploads.strikinglycdn.com/files/60564595-5b36-4aa5-a75f-980e46c634f0/54038191191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b24d47a-daf9-4b3a-a8fa-492e8d74a576/puneparunulikoduzoxowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7340dfb4-fefd-4bc7-bb6f-fa066c6ce25d/81563287573.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/autocad_mechanical_2013_tutorial_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/seismic_wave_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/romance_of_the_condor_heroes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6115/8303/files/how_to_perform_ghusl_shower.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 extracted file (font_00_sfnt_off0000842b.bin)

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_off0000842b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842B 5432 bytes
SHA-256: f4df800410897e1eb76423c12a7503169819d1bddbf01bf3d155528d797ce7a1
font_01_sfnt_off000096ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AE 11076 bytes
SHA-256: b2e6938fd68f6ff2c269d4ed564003631e16a05300961f74ebe8156447b79286

Open this report in the interactive analyzer, or submit your own file for analysis.