Malicious PDF — malware analysis report

Static analysis result for SHA-256 4854858cd1a76c03…

MALICIOUS

PDF

51.9 KB Created: 2020-08-12 04:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5874e8a40b2f688274337d98a8082b67 SHA-1: 9d06b6de595a3e49a5a7a9faa097bfc7906ed268 SHA-256: 4854858cd1a76c03af6947baaa9c91bf5f5c5a30747ce29761827b0d489cf624
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware distribution. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK strongly supports this conclusion.

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=elementos+de+la+administracion+publica+en+guatemala+pdf In PDF document text
    • http://zetumug.montaukcandleco.com/uploads/1/3/1/4/131406436/moxofusivedusik.pdfIn PDF document text
    • http://files.quietlegend.com/uploads/1/3/2/6/132695633/40a14b0ff7da3.pdfIn PDF document text
    • http://files.joshualively.com/uploads/1/3/0/7/130776104/relixorudupedariju.pdfIn PDF document text
    • http://files.unklemikesplace.com/uploads/1/3/1/6/131636914/83912.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/1/0428/0962/2691/files/41015105828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/zigobovarigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/parum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/merivonufotogilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7426/4981/files/online_converter_to_word_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9246/6080/files/vudarexifilazagulegesat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/43390664742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5656/9249/files/35760568185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/5859701795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5969/2198/files/application_of_third_law_of_thermodynamics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8392/files/88549060338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/55373798028.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_off000087f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F1 5572 bytes
SHA-256: 13ea19476cc1fdbf6c1643d631bef10bb71ee84133b008e0b20b957db1c19554
font_01_sfnt_off00009ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC8 11624 bytes
SHA-256: 214bb513d97c0758557e5397ef95767922ab37712e00173990fb668207f17042

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