Malicious PDF — malware analysis report

Static analysis result for SHA-256 98bec611d78c849b…

MALICIOUS

PDF

55.1 KB Created: 2020-08-05 04:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f68842fa637b628cb84d5146ce6afb01 SHA-1: acfc0a6d47f89095232c5b606603c790645c423d SHA-256: 98bec611d78c849ba83303ce511e6abc0b9539dc11421181079345090c080cd2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to a link farm designed to redirect users. One critical heuristic identified a link to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the URL 'https://ttraff.cc/pify?keyword=anodic+protection+pdf', which is likely the initial point of redirection.

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/pify?keyword=anodic+protection+pdf In PDF document text
    • http://files.exeterthreading.co.uk/uploads/1/3/1/4/131437736/dilap.pdfIn PDF document text
    • http://files.tonystiedyes.com/uploads/1/3/1/6/131606965/8555274.pdfIn PDF document text
    • http://files.byronbayhealthycommunication.com/uploads/1/3/0/7/130740148/xidipapukitafo.pdfIn PDF document text
    • http://files.studiojigi.com/uploads/1/3/1/4/131410158/zuduzizu.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/1/0437/0654/8377/files/acid_rap_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/31528923950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/bogodoxudibil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5756/9189/files/duwugixes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4055/5687/files/33298255129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0755/5222/files/29650491399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/vajuvovebukelulikopugesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/pdf_splitter_page_range_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/90435316792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/busagomukazoton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/78549041704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0196/9820/files/zesubukovilutujivutenuzuv.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 5

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_off00009b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B16 4716 bytes
SHA-256: 9080ceb4035a68ab070079bd6f5de709d7603172f9a64cea2c00a5057ec1f9e4
font_01_sfnt_off0000ab38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB38 10744 bytes
SHA-256: 43cc1be6fc4428edc2c52985a3dfffe1110e8dd74fa0d943eed64dd9ecdc1951

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