Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ad52a860759778…

MALICIOUS

PDF

48.3 KB Created: 2020-10-28 16:32:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 1bd46383465b5317c6346ca77fe1c346 SHA-1: 21c5d6b418e69ef426b4e18a6196851bfa18063f SHA-256: 03ad52a860759778612ef1f6b3c7ac15dc3f6c3db693cc6de362f54953d05d4f
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://ttraff.me/123?keyword=eddie+van+halen+frankenstrat+build In PDF document text
    • https://subarijarasojud.weebly.com/uploads/1/3/4/3/134332778/zokojulexera_vobokusoxatud_mureji_lezukigolumoze.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/7840343.pdfIn PDF document text
    • https://vufevilasok.weebly.com/uploads/1/3/4/3/134314299/110014.pdfIn PDF document text
    • https://morekifozolil.weebly.com/uploads/1/3/4/3/134332894/b0c99e.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/witojujawagejiwuda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5f91ae9747692.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385011/normal_5f911fe2c7cac.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wonoti/carslaw_jaeger_conduction_of_heat_in_solids.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/animal_kingdom_orlando_map.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/37162205326.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/id_vs_class.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/bezupusisekex.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/acta_constitutiva_asociacion_civil_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/analyse_physico_chimique_du_miel.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/service_marketing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/19336922728.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 4988 bytes
SHA-256: 6685d8834ff362080906d5e69e1b21f4bf7fdb753da105cca1b3b4b1df97a765
font_01_sfnt_off0000771a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771A 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00007fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA8 11912 bytes
SHA-256: 06c15c196d14a43de7b6591d23ff486d2735e50476451a2590db76d7b1c2d559
font_03_sfnt_off0000a5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5CC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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