Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e4215442b12bc6…

MALICIOUS

PDF

72.2 KB Created: 2021-02-24 22:30:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c5c599e3027930c463e75a6fbcdb43d4 SHA-1: 9035d358d5d635fa2069e15e53c06894295a5568 SHA-256: 74e4215442b12bc600a4eb54d3927ca550dd7589381fe2f6c7855cd8a058061b
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=departamento+de+la+familia+cupones+telefono+isabela In PDF document text
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/sapivasu.pdfIn PDF document text
    • http://artistichomesolutions.com/lavojofezuww1ykv.pdfIn PDF document text
    • https://zewerigavuj.weebly.com/uploads/1/3/2/6/132681779/rulapomox_zurenonobefal_logogulizotim.pdfIn PDF document text
    • http://shoop-fh.ru/327661064423uf1e.pdfIn PDF document text
    • https://powilamalowigos.weebly.com/uploads/1/3/4/1/134131405/gajunerer.pdfIn PDF document text
    • https://zelekunidos.weebly.com/uploads/1/3/2/6/132682808/2538012.pdfIn PDF document text
    • https://radutarogo.weebly.com/uploads/1/3/4/3/134379411/paxoveg.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/gavapevonim7vc0o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/nasejus.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/kubamogosabinogenal.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/29681852663.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/natural_disaster_preparedness_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vojapu/canon_p07_error_fix.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/suxidewopedikata.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/graco_pack_and_play_napper_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/tietz_clinical_chemistry_textbook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/adahannath_be_song.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/yandere_simulator_skin_template.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_off0000daa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA6 5440 bytes
SHA-256: cd8d0893bb15a8abe616b9a0e7f1c9e62b8afb87c2bdb619d6e015a5205becf8
font_01_sfnt_off0000ed0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0F 11752 bytes
SHA-256: ef0598308713dc4c85861f7c05427cedc353cc46f30f99753bdebbe79fb98e43

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