Malicious PDF — malware analysis report

Static analysis result for SHA-256 741ebfe4903c0cdf…

MALICIOUS

PDF

72.5 KB Created: 2021-02-12 22:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b3c688050c42b0d45bbcb89cccc13c89 SHA-1: 0ac92f3b1c7a183819d9640da498f0bffda3f549 SHA-256: 741ebfe4903c0cdfdd6e10bbf9ddbd0e060a6032223bfaf78198737184dab614
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=apk+minion+rush+unlimited+money PDF link annotation
    • https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/da9f16.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/jhjb64j/80763585648.pdfIn PDF document text
    • https://tifuxifig.weebly.com/uploads/1/3/2/6/132695942/69a9eabb3bd21b3.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/1970122.pdfIn PDF document text
    • https://cdn.sqhk.co/mibaforetu/9hdgcuZ/xekorapebugade.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/hjJ9chg/28463885768.pdfIn PDF document text
    • https://zoxamadafipezo.weebly.com/uploads/1/3/1/1/131164297/seterupexulu_mujala_tetolozodajelu_vuwefe.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/kefodek/lomuvuviduvaduxi.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/ravelupoxojenekegarozuk.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/tixaromakabovebe.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/30485844459.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/financial_reporting_actuarial_outpost.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/cystic_fibrosis_management_guidelines_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/56395285433.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/28238076543.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/87442193502.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/kendo_combobox_template_text.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/93858735580.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_off0000e020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE020 5144 bytes
SHA-256: bee5b8795fb4f0156ab4459ef06cdbc9abffa2c6421d1922fc34ebc190b22675
font_01_sfnt_off0000f17f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17F 10244 bytes
SHA-256: eaf833259480da7f015d0d243170a9904d9508e5a4312801f1e2b57f7bb76a62

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