Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2dabaf867b4985d…

MALICIOUS

PDF

42.6 KB Created: 2020-07-31 08:22:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bdbf0cab7a2e5b9590047c48289c9b3 SHA-1: 2317979b997d37edfd81744ba21e07b51ace43c7 SHA-256: a2dabaf867b4985d2fb4fdab06cf6c9199d2fab91e26c3fa5a2b9efbe0b423e6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links points to 'ttraff.com', a known malicious redirector. The document body is heavily obfuscated and appears to be junk data, but the presence of a link farm and a malicious redirector strongly suggests an attempt to lure users to malicious content or phishing pages.

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=maclane+category+theory+pdf In PDF document text
    • http://files.pylkkanenconsulting.com/uploads/1/3/1/4/131412558/55176cfde938bc.pdfIn PDF document text
    • http://files.fiberenvy.net/uploads/1/3/1/6/131606349/5094ac66492a.pdfIn PDF document text
    • http://files.erinmakesstuff.com/uploads/1/3/1/4/131453106/jemagulo.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/1/0427/6633/6167/files/sutenulidoxalapejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/dukigolefigapaben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1566/5824/files/nazapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/pakubejumobijodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/97295260199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/fijidodefus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3330/4981/files/98851963019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1072/6815/files/99939270723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4583/files/sikuzejobunenux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/23452975924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9983/0952/files/xevenozubarutu.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 8

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_off0000675e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675E 5084 bytes
SHA-256: 067df559a35ce573a0fe6b34e66a4b073e69035de2f53607bb948afa6e33bf8d
font_01_sfnt_off000078a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78A4 10768 bytes
SHA-256: f1cb825081fd6c305154a66f2e20e0afc758181b539eaa8d13e382c1dbab1445

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