Malicious PDF — malware analysis report

Static analysis result for SHA-256 15936537f297a9f7…

MALICIOUS

PDF

75.9 KB Created: 2021-02-23 09:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: d6b93cf2a473ab0641ef0cc654a05a9a SHA-1: d802771d1499823341e79af5fd1addd6d90c7012 SHA-256: 15936537f297a9f788f0285e04680115216e4f1088c56905fb7f0ad843e08ce8
196 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=unit+5+progress+check+mcq+answers+apush PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471688/normal_601e5c7504e39.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/xodarosewe_tibopikaxoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449419/normal_602336951c6cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368500/normal_5fd158c65b780.pdfIn PDF document text
    • https://zemutixo.weebly.com/uploads/1/3/4/8/134865820/xuruladez_monabugubupewix.pdfIn PDF document text
    • https://wasatetokis.weebly.com/uploads/1/3/4/5/134513062/d43ce45187665.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412378/normal_60007cb29a9bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413566/normal_6003888704582.pdfIn PDF document text
    • https://pijefezumiw.weebly.com/uploads/1/3/1/3/131379255/13a956cff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462350/normal_5fcf89793fbae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450260/normal_601bd35e4875c.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/gurupixabogivaz/63925761371.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/edexcel_a_level_chemistry_data_booklet.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/insanity_flyff_templar_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/excel_macro_find_value_in_another_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/kumesujaxaxixazod.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/abu_garcia_black_max_spinning_reel.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/16908304002.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_off0000ecdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECDD 5712 bytes
SHA-256: eb1ebd33c6a25025eeabbd21c1f2e035467678866608e5bb76d61763250653bc
font_01_sfnt_off00010042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10042 10096 bytes
SHA-256: 9164150945bc9ced6f1d1e74ba1388b36de0604a47704cd1c6028f9f688ddf91

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