Malicious PDF — malware analysis report

Static analysis result for SHA-256 d529490ea692d243…

MALICIOUS

PDF

47.0 KB Created: 2020-08-04 23:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59ab0aea435d0446852a5e3777619c22 SHA-1: 6c9170385bdb7f961274c1a6583f5f8d98f616f3 SHA-256: d529490ea692d24397023812480619cd00e10ee34e9a0f293583fa235f872025
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to a link farm designed to obscure the ultimate destination. One critical heuristic identified a link to known malicious redirector infrastructure at 'ttraff.com'. The document body itself is heavily obfuscated but contains the same URL, suggesting the primary purpose is to lure the user into clicking through to a malicious site. No scripts were extracted from this sample.

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=a%25C3%25A7%25C3%25A3o+da+acetilcolina+pdf In PDF document text
    • http://files.mrsbingham.com/uploads/1/3/1/4/131438563/zupigobuwitevawiw.pdfIn PDF document text
    • http://files.911bodyresq.com/uploads/1/3/0/7/130776118/natarudul-wasawebi-pifag-nisaneneduk.pdfIn PDF document text
    • http://files.catherinesemenick.com/uploads/1/3/2/6/132695302/nekomemow.pdfIn PDF document text
    • http://files.jasminkwan.com/uploads/1/3/1/4/131453248/kubomerebamel.pdfIn PDF document text
    • http://files.yanktondomesticviolencecenter.com/uploads/1/3/2/6/132695714/mogomaga.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/1/0439/1088/9624/files/najigesisakimexitukasil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/jibuzegatokinepovowiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/59297722668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9799/0055/files/82318941214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/nebupevap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/autocad_2020_to_dwg_conversion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/ruradegefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/77052819237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1561/9239/files/96314141976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9883/8942/files/20105494068.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_off00007665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7665 5364 bytes
SHA-256: c0b6c1c122028f2261bf6249e840c7ec59c1317ec780f1c470c74665ea46417f
font_01_sfnt_off000087ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EE 12372 bytes
SHA-256: 51a1ba6d1d9ef50c82871bb3d00f82b80a7c0243cf5c0165c6aca9ddacf268cd

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