Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b392f8542b6cbaf…

MALICIOUS

PDF

36.7 KB Created: 2020-08-22 23:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6e54beb38a17529e1ff64258affd0d1 SHA-1: 36f9e61bff5992c379da175b87a8dd6fae474b87 SHA-256: 5b392f8542b6cbafa573a763c63e4ef3e466a0517d8985f73829b90cde531733
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to a lab report and the malicious URL, suggesting a lure to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

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=invertebrates+and+vertebrates+lab+report In PDF document text
    • http://files.renstrapp.com/uploads/1/3/0/7/130740255/nolajimupegojusofevo.pdfIn PDF document text
    • http://files.elev8tedproductionsllc.com/uploads/1/3/1/4/131453076/5571202.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/1/0432/8413/6086/files/mudaxaxunanukes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/18003570522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8745/7432/files/42917313921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6781/files/service_marketing_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3508/1374/files/10804405955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8872/files/luwek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2755/files/81271931203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2217/files/bt_email_server_settings_for_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2734/7109/files/47099587315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/ayatoul_koursiyou_en_arabe.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 1

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_off000052c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52C9 5092 bytes
SHA-256: ac6d3be3c68f7d501294c0dcd6043bf64f35e818d623997ebf661cc245a066ef
font_01_sfnt_off00006418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6418 9920 bytes
SHA-256: b20d93804d6be9a27c985a8f22412d1d2afe8b1952c8c7b71b16e69d1691346e

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