Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17c20338f2b2b93…

MALICIOUS

PDF

37.6 KB Created: 2020-08-20 06:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 143728722e969cbd9e63659c961fa17d SHA-1: 74544174c5bf435bf317a79d4d123892de620479 SHA-256: e17c20338f2b2b9383949045344fb1d19499a59fa5aa923e057e0dce21ee2d05
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though obfuscated, contains text related to educational materials and the malicious URL, suggesting a lure. The presence of a link farm and a redirector points towards an attempt to funnel users to potentially harmful 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.com/pify?keyword=mcgraw+hill+education+textbooks+answers In PDF document text
    • http://files.magnoliabodyworks.com/uploads/1/3/1/4/131437832/vajijevibejipubi.pdfIn PDF document text
    • http://files.edgewaterasset.com/uploads/1/3/0/8/130874633/00d41c.pdfIn PDF document text
    • http://files.sturtmoor.com/uploads/1/3/0/7/130776809/zekafap_giguzus.pdfIn PDF document text
    • http://files.treehousewisdomandwellness.com/uploads/1/3/2/6/132695575/9664420.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/1/0437/9266/2688/files/26531295810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/76168173349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/86691928559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/vofojujejowidofolibak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/69856727374.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/asthma_in_pregnancy_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6570/4599/files/sifejuwiluxexisotej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/edgar_allan_poe_historias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3874/files/4908070759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9551/3505/files/vb_script_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5827/8050/files/raiders_schedule.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 5

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_off00004fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE0 5572 bytes
SHA-256: 5875de65b9e74b6cb07a4e5732f4ea3f5882f39932cefc5dd44496f44b2e175d
font_01_sfnt_off000062de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DE 11940 bytes
SHA-256: a0b6a9bdb8f1c71ea251a02270c093f6afc408622810f8b131f6c46b2844cf12

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