Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c447aa918886905…

MALICIOUS

PDF

40.3 KB Created: 2020-08-12 18:40:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f0ba8e8acf4701ce50455bfec7b28d7 SHA-1: 470aeb509f0f9b3e39bfa6db711301dfd285861d SHA-256: 5c447aa9188869059aaf47bdab4a2331b17b1857d16f4763907845917ec3826c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=business+administration+and+management+courses+pdf', which is also flagged as a malicious redirector. This suggests a phishing or scam attempt to redirect users to malicious content.

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=business+administration+and+management+courses+pdf In PDF document text
    • http://files.wellsburgchamber.com/uploads/1/3/0/7/130740438/nanav.pdfIn PDF document text
    • http://files.dbdfilmservices.com/uploads/1/3/1/3/131379312/4146486.pdfIn PDF document text
    • http://files.hardwickwinery.com/uploads/1/3/0/8/130813667/9232181.pdfIn PDF document text
    • http://files.spectrumdoula.com/uploads/1/3/1/6/131606890/4994060.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/1/0437/0949/7496/files/9381952098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/zanusom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4537/6420/files/annotated_outline_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9477/files/4749016451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6420/4193/files/ruvodixukidajap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/jebawirazunaxedoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8859/3567/files/68322335011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3772/7637/files/gatokug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/51172604438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/29309162437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1722/3847/files/stayed_prayed_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5026/files/present_simple_and_present_continuous_worksheets_with_answers.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_off00005fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE2 5492 bytes
SHA-256: 12c4c18e1383fb4b89fc9a119845e352e6a4ce05e927191331f2b2c338132db7
font_01_sfnt_off00007277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 9788 bytes
SHA-256: f0554d84572a7a5d86bb47368c57d4e847a55967e725acea86df845c68c80701

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