Malicious PDF — malware analysis report

Static analysis result for SHA-256 29f31a99742d6604…

MALICIOUS

PDF

39.7 KB Created: 2020-08-28 02:48:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8038b122d68bc91aac0c89c0f3b3bb01 SHA-1: 2be009d949a2629f1699af6288afdf64e3ea50b9 SHA-256: 29f31a99742d6604d0ebfb39546f4889ad4f6a11ffbbd07e12c9c47535e1022c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Praxis 5354 study guide pdf' and the malicious URL. The heuristic firings indicate the PDF is designed to redirect users to malicious sites, likely as part of a phishing or malware delivery scheme.

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=praxis+5354+study+guide+pdf In PDF document text
    • http://files.krystalsolutions.com/uploads/1/3/1/8/131856162/dolikusitugoj.pdfIn PDF document text
    • http://nepaxu.yesindustrialsupply.com/uploads/1/3/0/9/130969280/212746d.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/1/0464/1734/6728/files/18586166046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0825/8211/files/food_and_beverage_cost_control_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/o_ambiente_de_trabalho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2079/6583/files/84913222042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/zejuwasazelij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/89698172130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9617/6808/files/partes_de_una_zapata_aislada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/kabary_betsileo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7012/0085/files/english_worksheet_nationalities_and_countries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4771/2928/files/wiwuwumezamuwutuwisejen.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_off00005af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF3 5724 bytes
SHA-256: a2ad7bacb20cdb1906dc8c679f9e3a6520e5bd9ca30c92c5e6d31532fa72cb25
font_01_sfnt_off00006e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8A 10484 bytes
SHA-256: a44d942a7da37771387b5f56bee6b27f62067e2f0998dce96ce86dfb2c91c5ce

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