Malicious PDF — malware analysis report

Static analysis result for SHA-256 b950ce429d5e82b8…

MALICIOUS

PDF

38.0 KB Created: 2020-08-15 18:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c84c34ebf379229b028a0fd100adfbc2 SHA-1: 5f731352bb9eeb1063baefb1d4330b272af3a83e SHA-256: b950ce429d5e82b815f3ab8e318236c836cafe8bfec074fb074f4f4c09bd49fd
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains multiple heuristics indicating malicious intent, specifically a redirector link and a large number of embedded external links. The primary malicious URL identified is ttraff.cc, which is known for redirecting to malicious content. The document body contains garbled text but includes the URL that triggered the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, suggesting a lure to download further malicious 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.cc/wb?keyword=el%20escudero%20de%20dios%202%20pdf%20descargar In PDF document text
    • http://files.thefinerprint.com/uploads/1/3/0/8/130874582/lukerubewutilav.pdfIn PDF document text
    • http://files.longhornsdivingcamp.com/uploads/1/3/1/4/131437276/momavowilubumil-vavasiputodon-foxukiru-bixebojozivu.pdfIn PDF document text
    • http://files.iambumi.org/uploads/1/3/1/4/131438211/zuvowofo-sunina.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://cdn.shopify.com/s/files/1/0440/4979/3174/files/humberts_sword_classic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/10579233449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/absceso_periamigdalino_tratamiento_antibiotico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/83705095579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4992/files/kelipozoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9186/8310/files/54707836717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3099/2280/files/tefokodanuteburumak.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4947 5108 bytes
SHA-256: 4f48f1a004455bdc2cb9973b5acd341357ed44575fd9bd757dbe841637cae2a2
font_01_sfnt_off00005ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB4 10128 bytes
SHA-256: 6c6bde09dc7afcd0cce3659fbb30d8c62e5a6c54f2b946d7726f6eb71a249df1
font_02_sfnt_off00007d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D76 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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