Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe3a82b5a57144d…

MALICIOUS

PDF

40.4 KB Created: 2020-08-25 08:27:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd130e3c068c5564a24b88b2a85695c6 SHA-1: d548960b7c79fde250c0ca0d11de0d5ebf6e6557 SHA-256: cbe3a82b5a57144dfe5baf84809e37aaebe620d7169f330e95846a8e67726bda
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=betternet+premium+4.+6+1+apk'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/pify?keyword=betternet+premium+4.+6+1+apk In PDF document text
    • http://vafizisuk.deeperwaterscounseling.org/uploads/1/3/1/8/131871449/1167065.pdfIn PDF document text
    • http://files.medley6pack.com/uploads/1/3/2/6/132683137/7458165.pdfIn PDF document text
    • http://files.ryannewtonphotography.co.uk/uploads/1/3/2/8/132815343/xurajezavubu-tusaj.pdfIn PDF document text
    • http://files.hypnomads.com/uploads/1/3/1/3/131384573/badc8b2e909.pdfIn PDF document text
    • http://befun.moldova-ministry.org/uploads/1/3/0/8/130873851/fapefapujazugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3623/1068/files/balance_of_payments_disequilibrium.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/28782719280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/jojikozipogizotijek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5824/9376/files/zamulobizewinisimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2077/8653/files/58914824223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/73498448292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/big_balls_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/business_intelligence_analytics_and_data_science_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8373/4943/files/fractions_worksheets_7th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6890/0006/files/21643794317.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_off000061da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 5192 bytes
SHA-256: 3c8843bf746611b4cfc9b91be4ec2d33a811b5447f1e9822b1fca45de11e87b4
font_01_sfnt_off0000737e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737E 9784 bytes
SHA-256: 8c29675e7bd39d3af45c72d107a96fb99b315f3dc46d68eaf1e3df5ce96a75e2

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