Malicious PDF — malware analysis report

Static analysis result for SHA-256 445e70102a21f459…

MALICIOUS

PDF

47.8 KB Created: 2020-10-17 20:34:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: ced3cd76388c307c1b1122fccd307806 SHA-1: b253671dcc361d3856e4c1ffb06b9785622ad449 SHA-256: 445e70102a21f459b7b0d96bcb96f2cdaa9ee66a1745913a52595b03b233742b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The embedded link directs to a known malicious redirector, likely intended to phish credentials or deliver a secondary payload. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector.

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://cctraff.ru/123?keyword=fortigate+1500d+user+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f8818fe45a43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370542/normal_5f88b8a8ae21e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f89a8e1b4835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2e34ae9d-af5b-44a8-a52a-ec5b5219f886/37291869766.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/190299ce-1280-4086-b34a-7541ac29aa8d/kivesopeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1439ce92-036c-4ed7-81dc-6b7dd948227c/gebenob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50697162-843d-4ec7-9dac-7f2fb726b1b1/68422853952.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d1ef80-844c-4cbb-8fb4-5d5cc4f6385a/85719763175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b122730-d131-4359-a4ed-7c3735b545f2/45847198067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd38809a-d28d-40c6-a25e-fc3778d6d25c/11226419520.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4c03f79-8605-4140-ad54-3a8eeb0b65f6/pezut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04b7163b-d918-40b4-8762-c8b2917fe629/nisobivomumuwavutadoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ac65d2d-f4fe-4d44-b361-10cecb454b3c/73551814288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a6a4ca6-f639-46f9-a315-1edc3f76b1b6/48917143329.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7619/0361/files/zudej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6093/1991/files/anandamela_pujabarshiki_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0222/3013/files/darenetosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8570/2319/files/metar_taf_abbreviations.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000692f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692F 5012 bytes
SHA-256: 789dfb345566438cf62c66130768079669eefc44d04ff608ccefca959f7909bc
font_01_sfnt_off00007a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4F 12800 bytes
SHA-256: 18a0e87110edaea8c28896e4d2df5b92bd4181ae0af0b15a59b27434d75884a3
font_02_sfnt_off0000a3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3DE 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2