Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf9ca0e4adba13e…

MALICIOUS

PDF

71.4 KB Created: 2021-02-26 13:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 5f68eb569af5df8bb77c639b54e6622c SHA-1: 604c25a5709cf696df7c24cf4116205363d91345 SHA-256: 5cf9ca0e4adba13e00dd1e1a6364a64c47b7a056ac828bf04e2a8280bc4bc56c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/aws?utm_term=esv+bible+leather+large+print PDF link annotation
    • https://cdn.sqhk.co/junizafuzep/4qDhjts/lawupozexexaduji.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/hjGEXJf/1171644814.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/44658089145.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/27313323022.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/EWoashd/jujunotuzediwemelunowax.pdfIn PDF document text
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/b004731232ab.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/wizukus.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/826100306.pdfIn PDF document text
    • http://timinome.getenjoyment.net/what_is_dd_one_shot.pdfIn PDF document text
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/225de4e8f03ca.pdfIn PDF document text
    • https://natulawud.weebly.com/uploads/1/3/4/3/134309077/nizedes_sopowudijejaxus_xuwazinevum_rizetetopoke.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/hIhdIh0/96723513302.pdfIn PDF document text
    • https://guzokilib.weebly.com/uploads/1/3/2/7/132741743/jemogewigi.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/gedimuta/85683508058.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/onan_microquiet_4000_carburetor_solenoid.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/vebejobanoruz.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/14660392870.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/10081952251.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_off0000dac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC1 5236 bytes
SHA-256: 4e639ee6bc06cf5673c7eae836f278a2c3e997699d3b2d32d110fa13aa93c6fa
font_01_sfnt_off0000ec95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC95 10520 bytes
SHA-256: a628e5c18f85bf3d5f1be38a446cc62277ab97ba9e2e8e8866b911e3f763e10e

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