Malicious PDF — malware analysis report

Static analysis result for SHA-256 78cc424e5dcc18ce…

MALICIOUS

PDF

39.2 KB Created: 2020-08-08 06:39:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5163620563301de63e78f44b7b7c04aa SHA-1: 59a288827d65bd1d8bb6449b053329b351c6fc03 SHA-256: 78cc424e5dcc18ce43c6afa67b22ff5fd6a9a70548cd95b58edfce67337139f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The primary malicious URL identified is https://ttraff.ru/pify?keyword=springboard+algebra+2+answers+pdf, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains references to educational material, suggesting a lure to trick users into clicking the malicious links.

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.ru/pify?keyword=springboard+algebra+2+answers+pdf In PDF document text
    • http://files.staceydenny.com/uploads/1/3/1/3/131380345/7430454.pdfIn PDF document text
    • http://files.aaronmostojfeathers.com/uploads/1/3/0/8/130813366/8841914.pdfIn PDF document text
    • http://files.pianolessonsrichmondbc.com/uploads/1/3/2/6/132696512/e397e26b3057.pdfIn PDF document text
    • http://fuzuf.lorrainechandler.com/uploads/1/3/1/0/131070450/6592731.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/1/0431/2023/0564/files/84853606366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0904/7708/files/how_do_you_reset_photoshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4528/9127/files/39252914500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/penifuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/nofinavogarusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/breast_cancer_awareness_coloring_pages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7270/7990/files/kiwunibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/42656549347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/36384828290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/balanced_diet_assignment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/gufub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/tisikezaxadosupabunibox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3675/3570/files/tirefalotes.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_off0000544b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x544B 5676 bytes
SHA-256: 41cb2beaaa7afe666f9063ece530ff0b0bf171ca7c0517bda8fb1e7711de76eb
font_01_sfnt_off000067b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 12180 bytes
SHA-256: 905d7ebd47564587e73ff9d06f2964a748db0518eaa8347bf45e15425c852a63

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