Malicious PDF — malware analysis report

Static analysis result for SHA-256 191223fe0bb5e864…

MALICIOUS

PDF

73.5 KB Created: 2021-03-03 20:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e77a017c629d8bbbdfbe2a6162a76102 SHA-1: fedd49b1d954dc5cd35f09280eaac5791ea023c1 SHA-256: 191223fe0bb5e8644f8b4c0a70e4d824ee7e511fb7ed5c6e03f853aa6d9cb18f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://midufefew.ru/strik?utm_term=how+to+open+wd+my+passport+ultra+hard+drive PDF link annotation
    • http://jarewitof.mypressonline.com/jigexokirulalawal.pdfIn PDF document text
    • https://megevoweroke.weebly.com/uploads/1/3/5/3/135351245/7670d3253b5ce44.pdfIn PDF document text
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/besowejenitimoxu.pdfIn PDF document text
    • http://creditreportusa.info/star_template_printableioy66.pdfIn PDF document text
    • https://mefixakiderix.weebly.com/uploads/1/3/4/3/134319494/540846.pdfIn PDF document text
    • https://molukubiluvu.weebly.com/uploads/1/3/1/4/131453067/tivobunid_xefezifode.pdfIn PDF document text
    • http://nout-prodat.site/kebetureniwizaximokarosunnsvfc.pdfIn PDF document text
    • http://theporte.xyz/harder_than_you_think_gamen6gii.pdfIn PDF document text
    • http://koolmaxt.online/evaluating_expressions_with_exponents_and_parentheses_worksheets0pbkb.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/8009667412.pdfIn PDF document text
    • http://sy0n.icu/kuditefuguzoyg5y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/how_much_money_to_start_day_trading_crypto.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/zitupen.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/avast_secureline_crack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/conclusion_flemish_bond_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/vudamevumiji.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/aes_256_bit_encryption_android.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/6188685036.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_off0000e24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24C 5412 bytes
SHA-256: 07dad8e887b418263d728fe016953cab796c69712acb233c556cced9dcdd3449
font_01_sfnt_off0000f4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A0 10796 bytes
SHA-256: d17a2e6993af3310a2260c1a725cfe502eb1493c9af794d106d4483c2f925cc7

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