Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8f2875fc433814…

MALICIOUS

PDF

45.6 KB Created: 2020-10-01 05:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 916e8d2664a19fb8ee93ca3bd4e79e99 SHA-1: f9ff376aaf48611e7dd655566d1a7b02e5bb4e56 SHA-256: aa8f2875fc433814a1089e41e5ba5e85ae9bc14c056a81fc809f1ddf1bae0079
214 Risk Score

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/strik?keyword=network+security+tutorialspoint+pdf In PDF document text
    • https://site-1036973.mozfiles.com/files/1036973/penagevibenakupoge.pdfIn PDF document text
    • https://site-1036798.mozfiles.com/files/1036798/19401290974.pdfIn PDF document text
    • https://site-1039925.mozfiles.com/files/1039925/gawoperanakorini.pdfIn PDF document text
    • https://site-1037106.mozfiles.com/files/1037106/dukibefimud.pdfIn PDF document text
    • https://site-1037177.mozfiles.com/files/1037177/tawifupen.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/35614186529.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/1/0432/3452/5347/files/sugipabakumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/armas_de_la_segunda_guerra_mundial_para_dibujar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/capacitor_start_motor_wiring_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/42458329123.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bf1ce31-1d2b-4fda-800b-24057ea910e1/21875374903.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d06fc4e8-e77a-48f0-8101-0b5d6ed08cd9/26728926807.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_off00007374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7374 5376 bytes
SHA-256: 0d53a56fa1752f162422880e036778eea06c54b96ae8fd29932dd1e2c49f007f
font_01_sfnt_off000085f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F1 10564 bytes
SHA-256: de9e18a301d8be86e17a38197f692b820e7ed3e5a29422fcb279b1b0113a7bb7

Open this report in the interactive analyzer, or submit your own file for analysis.