Malicious PDF — malware analysis report

Static analysis result for SHA-256 65db83da0f96ab05…

MALICIOUS

PDF

45.8 KB Created: 2020-08-13 09:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36a79ae06e579bf6d13a29fb775b2c9d SHA-1: 2cd92606a23303ed5bce37bd41d6bd8b8c134629 SHA-256: 65db83da0f96ab05f91c84dfaee0d9c340f23995a0c27e04d15f2b5f57f8fbc0
202 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one to a known malicious redirector, suggesting a phishing or malware distribution attempt. The document body and embedded links mimic an exam result to entice users to click through to potentially malicious content. The presence of a link farm and a redirector indicates a coordinated effort to drive traffic to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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
  • 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.cc/wb?keyword=ignou%20b.ed%20entrance%20exam%202019%20pdf In PDF document text
    • http://files.tillylunken.com/uploads/1/3/2/7/132710690/lugatapowubofogamud.pdfIn PDF document text
    • http://files.mendedwingtheatre.com/uploads/1/3/0/7/130739398/vanare-gekirux-watubavol.pdfIn PDF document text
    • http://libut.caraday.me/uploads/1/3/1/4/131438405/nepijajezisazibusok.pdfIn PDF document text
    • http://nuxotote.stephenlemons76.com/uploads/1/3/0/9/130969744/8231981.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/1/0432/9809/5272/files/15759406237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3896/4903/files/13726633610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0352/6820/files/fevabijubugusugatudagulax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/bibomikibawema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/wutor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5958/files/81415588423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2924/5600/files/miwinomasifirijaremexis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2765/0970/files/25603246242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/73423949406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/1555196304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/lufesidimerixobakaxeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8456/2086/files/gidivezimopebixoxejogami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/both_and_either_or_neither_nor_worksheet.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_off000072e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E6 5924 bytes
SHA-256: 251fd486092f76b11241c2d7705bd95a35e59f4b24db2d5e9fe1ecc3155230cd
font_01_sfnt_off00008709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8709 10272 bytes
SHA-256: 22394e03313e315e75b0f5fc494b1ed47381b1758d86a3935998f63736fb3da6