Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ecb967aa5bbe7f…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 23:26:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9573e2414a59d5890a81976a7790e305 SHA-1: 95d81a20c8d1b8e9d14b5dc88648b6ff79f51ca6 SHA-256: c5ecb967aa5bbe7f1fbc87ff2bc9fd27eb1df33918ef77798712c0f39721c8c1
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a redirector to a malicious URL, disguised with text related to Acadia National Park. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary link leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many hosted on Shopify, likely to obscure the malicious destination. No scripts were extracted from this sample, but the document body and heuristics strongly suggest a phishing or redirection attack.

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) 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://ttraff.ru/pify?keyword=acadia+national+park+self+guided+tour In PDF document text
    • http://gusin.wmsbands.org/uploads/1/3/2/7/132712207/rufolomexatepamulir.pdfIn PDF document text
    • http://mujuso.tennisschule-khablo.com/uploads/1/3/2/8/132814930/wiwiwoji_wiretojal_vafova.pdfIn PDF document text
    • http://files.rcgsociety.org/uploads/1/3/1/8/131857305/zovavuw_gikonexav_mefisari.pdfIn PDF document text
    • http://files.dancynvending.com/uploads/1/3/0/8/130874544/xadobuwavexotufa.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/1/0431/8802/7543/files/mifelofiketalevaguziwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/lamogezasabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1994/1541/files/longman_academic_writing_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/98380528039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0725/8269/files/stihl_blower_bg55.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2448/1431/files/kuziwuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/riziveboturumomoruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0177/9100/files/vomutodarozakasatubasit.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 6

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_off000065e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E1 5376 bytes
SHA-256: 32c66a768fcd97a0077a29cc94122a42d025c36fbff8c3fe068677ffd754fc62
font_01_sfnt_off00007834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7834 9832 bytes
SHA-256: 2a7219188425fd694b47235910e4d06880c74bc70b409f537d7b491bc0c9eca5

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