Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c608e0a9c48ab3…

MALICIOUS

PDF

41.1 KB Created: 2020-09-30 20:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 319115dc3006019f55a0b659784dd77b SHA-1: f319830d3a481095f19ec9e1b4f03777e80d7c95 SHA-256: e4c608e0a9c48ab3b4760fda4b9f39a9c1afd5af9e24fb5ed7469dd1be39a98e
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://gettraff.ru/strik?keyword=banking+awareness+june+2018+pdf+download In PDF document text
    • http://befabef.farleydesign.net/uploads/1/3/1/6/131606233/barutajif.pdfIn PDF document text
    • https://site-1037212.mozfiles.com/files/1037212/22876781400.pdfIn PDF document text
    • https://site-1036957.mozfiles.com/files/1036957/lakis.pdfIn PDF document text
    • https://site-1037129.mozfiles.com/files/1037129/vupiroz.pdfIn PDF document text
    • https://site-1036745.mozfiles.com/files/1036745/nofuxawikagazajagofigog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/28f19ea0-7351-4731-8840-67adab7eecd0/51531807237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c1408ef-8480-4b66-adc5-08785c074b09/12743588682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8abe49ca-7e2c-475e-abd7-7cd352a9f3f7/88404174625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a308ac0-c523-41ba-ad37-57ac51190447/zekogasok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4243296e-2c99-4bfc-b5d8-3a7d3b049e9f/23217982519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cdd58ac-c346-4c3c-aa77-35834712ed3c/mawofupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72f4c365-fdf8-4672-8a7b-50e2834596ae/dixokejavawakeboxuzame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde57d28-3f4c-4233-ad2b-3cb01e5e82f1/84969955932.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_off00005f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F25 6008 bytes
SHA-256: c1e14a60b84a05b625442961135bbab6f89502af559867ca1fcee142a531eee6
font_01_sfnt_off000073cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CB 10560 bytes
SHA-256: c41f294c1c60e5c9287f26ce36744c8ee69e8801dd572ddcafcdb1a9ce7a1752

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