Malicious PDF — malware analysis report

Static analysis result for SHA-256 445a053756e28929…

MALICIOUS

PDF

45.3 KB Created: 2020-10-05 10:44:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 15d6206c3528936e72d0c092b8d9859a SHA-1: b6cbaaee1bf4c380f4ca770311b2c1933c6b9e24 SHA-256: 445a053756e289296826919963bba1c9750b3b43dc42dc1b5df8fda252563267
194 Risk Score

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://ggtraff.ru/strik?keyword=lois+lowry+gathering+blue+pdf In PDF document text
    • https://site-1039198.mozfiles.com/files/1039198/bejotaxibimi.pdfIn PDF document text
    • https://site-1043090.mozfiles.com/files/1043090/36168453148.pdfIn PDF document text
    • https://site-1038770.mozfiles.com/files/1038770/14960710297.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/1/0437/3427/0117/files/wefome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/sabefebiremumaxosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1519/0181/files/panic_at_the_disco_lead_singer_haircut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0752/files/sniper_3d_assassin_shoot_to_kill_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5859/3431/files/eaton_chspt2ultra_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1353/6925/files/prentice_hall_united_states_history_2010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fe936e6-e169-42b8-b2aa-81771936b3b8/puwasimabenifezipik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d53154-31b6-4b7c-a4c5-2bcd69b54890/wagonevopakupupeme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ce62e25-9fbd-498f-99a3-8f8669208391/gikutakatu.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_off000073d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D2 5580 bytes
SHA-256: ed578e4cfa6efc4eb9d301f65c04b6efecc32ef07b6e22cc2a32f950cd05fe91
font_01_sfnt_off000086d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D8 9876 bytes
SHA-256: 56bbc9b0d702a0247611a4310f815fbef8b0807bcd3712e0f52b414bd91c807a