Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d997aa08ce634d…

MALICIOUS

PDF

45.7 KB Created: 2020-09-10 01:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ed18e381af15be918d2bace71cf8e29 SHA-1: 165654f7e13bca442aa12e564a5309e4cb6c5ea2 SHA-256: 44d997aa08ce634d57a0a55ca04eee6ae4cb10c479a1c9d8d61bcfc5e8a83e22
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links designed to redirect users to external websites. One critical heuristic identified a malicious redirector link, and another flagged a PDF link farm. The document body, though heavily obfuscated, contains text related to a "mathematics book pdf class 6" and a URL that appears to be part of the redirection chain. The primary intent is to drive traffic to malicious or potentially malicious external 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.me/pify?keyword=mathematics+book+pdf+class+6 In PDF document text
    • http://kutezifo.easternsitedevelopment.com/uploads/1/3/1/3/131378816/newuxobe.pdfIn PDF document text
    • http://files.farmmeetsfunction.com/uploads/1/3/0/8/130874295/7c120bc8e.pdfIn PDF document text
    • http://files.chrisnorrisart.com/uploads/1/3/1/3/131383384/3056347.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/1/0463/6377/1035/files/tabla_de_caracteres_ascii_completa.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5b9a87_b1f1c6db4095470ba3fb9afab3cf353a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9df9d6_c57b1faed9eb4cda8ac8edbdafd151c4.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d162e3_cf9c7689665349509dcbbd3e902f84a2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/daca0d_1e4e5061be0f481c94698becee712803.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ea9bdf_b2f6cb8e05264cf89768ce3ff79959d3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4983/4901/files/project_administrator_duties_and_responsibilities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0016/7589/files/bcbs_fep_medication_prior_auth_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6531/0373/files/vedaromo.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 3

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_off00007467.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7467 5664 bytes
SHA-256: 2bf611d2df651659693024053f233161fb460cab4a5e62588a36d137b045e2ca
font_01_sfnt_off00008792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8792 10088 bytes
SHA-256: ed498615078af3ca890a7db4a48dc686f0ed7fa02bd60cb29391ebd17bc18846

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