Malicious PDF — malware analysis report

Static analysis result for SHA-256 9be1b4c2e5a93e3c…

MALICIOUS

PDF

84.0 KB Created: 2021-03-12 14:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 331898d01c8d65e3ef3ed454f1e47853 SHA-1: e32ee49a05cadb492df2588e73428b300b0fd0be SHA-256: 9be1b4c2e5a93e3c1221afc2c756d2307d79725920475e9a923d6df155da34be
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which are part of a link farm designed to appear as legitimate content. The presence of a 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristic, along with ClamAV detection as 'Pdf.Phishing.Trojan', strongly indicates a phishing or malware distribution attempt. The primary malicious URL identified is resalured.ru, which is likely used to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/strik?utm_term=how+do+you+write+a+date+range+in+ap+style PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387704/normal_601a59c62283a.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/85282008964.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/67993640981.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/mubukigigeduko.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/can_print_from_quickbooks_online_have_multiple_companies.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/what_size_are_clipper_guards.pdfIn PDF document text
    • http://ruvikuvi.mywebcommunity.org/assumptions_of_logistic_regression.pdfIn PDF document text
    • http://pewekelexu.mygamesonline.org/13583320640.pdfIn PDF document text
    • https://biteledazuxol.weebly.com/uploads/1/3/4/3/134315761/mimiwajiweporo-gewonudep-saxivixuz-robusisir.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/knight_rider_piano_sheet_music.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/86669396543.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/creepy_crawly_pool_cleaner_not_moving.pdfIn PDF document text
    • https://fuzizozole.weebly.com/uploads/1/3/4/6/134630054/dezidurut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_6038c5f3b75f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7ec9ed57-df89-401a-953b-45744c150cee.filesusr.com/ugd/6e3131_8a5e46d59d1d48a5993b9f35ea2589c4.pdf?index=trueIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_73f73c324034463ea8cb2bc37685140f.pdf?index=trueIn PDF document text
    • https://0f926834-650c-4d5a-b53c-ad60ae412ccc.filesusr.com/ugd/6a44d8_92952cddb6834900bc089c5854f06997.pdf?index=trueIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_2e8ca60b849e4f018055a0d7343ecd3b.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C4 5280 bytes
SHA-256: 02632a6e05e36d1571f3cf3d73c059818f81ee8212059d70f57b907e7cc1727f
font_01_sfnt_off000105de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DE 11224 bytes
SHA-256: abf54ea73ad0976a14641a8806af0f4a487d96af49f8aebf92658c525bae97c6
font_02_sfnt_off00012c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C15 16084 bytes
SHA-256: d4aae156ec6e8489d33afb6fad4be8c1315b5c882b5fb5fb5cd0fca9d06f1bf6