Malicious PDF — malware analysis report

Static analysis result for SHA-256 967bf3899ff7a0da…

MALICIOUS

PDF

35.4 KB Created: 2020-08-22 18:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3aed07b7f9b62e37a54b573c6425352a SHA-1: b35439bf022a094abf8269b12703ee45b519f993 SHA-256: 967bf3899ff7a0da117b7fff4b283c36dacec90c817f4bc7aa0713b5a64d1e22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body text is heavily obfuscated and appears to be a lure related to a trophy guide. The primary malicious indicator is the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, suggesting the document is designed to lead users to harmful content.

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://ttraff.ru/pify?keyword=atelier+lydie+suelle+trophy+guide In PDF document text
    • http://files.thefortunatefew.net/uploads/1/3/1/6/131637055/018cf3959d8b03.pdfIn PDF document text
    • http://files.busybaskets208.com/uploads/1/3/0/9/130969306/tegavitibit.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/1/0431/9117/3278/files/xivubenejunososikugedafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5524/2655/files/twin_over_full_bunk_bed_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/94719314443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5083/4847/files/tijazesasinelovuresej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5940/3157/files/bergman_spaces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/43748530782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3478/5430/files/38310842915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/79._9_kg_to_lbs.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 3

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_off00004bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BC8 5104 bytes
SHA-256: 23972d523fa77bb5cb03defb096b24a0568c74d34651e1fc4a3709c5f1e902d5
font_01_sfnt_off00005d29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D29 10584 bytes
SHA-256: 83d97d1de6966c014fb2bc2193e1df1a00b32828a28e0924da346498214264cf

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