Malicious PDF — malware analysis report

Static analysis result for SHA-256 63b1ed5899129ee6…

MALICIOUS

PDF

45.7 KB Created: 2020-07-29 14:09:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 239fb9fccdb9b70469f5f4b5373727b5 SHA-1: 317a02b81ef14be1f3ab8056334405895fe237d7 SHA-256: 63b1ed5899129ee6ea2663c0bed4736c055a9f6e3ca058b19375cf7e43680ad6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.com', which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'amend pdf free', aligning with phishing or scam tactics. The presence of many external PDF links further indicates an attempt to drive traffic to potentially malicious or ad-filled sites.

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.com/pify?keyword=amend+pdf+free In PDF document text
    • http://files.artistkevinbowers.com/uploads/1/3/0/8/130813888/1777473.pdfIn PDF document text
    • http://files.sheevzphotography.com/uploads/1/3/0/7/130739385/539424.pdfIn PDF document text
    • http://files.mauipopwarner.com/uploads/1/3/2/6/132695365/lotitim.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/1/0428/4973/0727/files/gidupitibudafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/jobitizopapipuwajus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/sulurevanedanov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/12222909625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6694/9786/files/gomepisilipatefalesipegon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/50941048911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9614/6074/files/66106696797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4757/4943/files/sudojamuvone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/27993791397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/35369041738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/wajulolivalajorefevipewas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/fubexesarejil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/tilad.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_off00007976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7976 4308 bytes
SHA-256: e71f4394e9b895452320b5974d29200fd4313ee1ab4a51922fa5678037c7ba2d
font_01_sfnt_off000087d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D6 9972 bytes
SHA-256: 7277d788fccb5bfe8b2856873a689d2011369abd672e66a74ae952eb938cdf28

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