Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a1814c5b4a10849…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 15:42:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8b3d022b5d9326b1e51c7ba13af8534 SHA-1: cad92ac7cdc638833f465d46c1f9bf2061bb31cf SHA-256: 1a1814c5b4a1084944f36d022a6300c217225581a93368823f281f569f237e6b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body text, though garbled, includes the phrase 'Search for pdf only google' and a URL that matches the redirector. This suggests the PDF is part of a link farm designed to direct users to malicious sites.

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=search+for+pdf+only+google In PDF document text
    • http://files.newyorkvideoproductions.com/uploads/1/3/0/7/130775001/0b6497.pdfIn PDF document text
    • http://files.missinglinkarchives.com/uploads/1/3/0/7/130775337/sanemadasimerapuvuz.pdfIn PDF document text
    • http://bumogim.steppingstonetuition.com/uploads/1/3/0/7/130739680/6ab72.pdfIn PDF document text
    • http://files.miguelbaumann.com/uploads/1/3/0/7/130776033/2989762.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/1/0435/8150/5695/files/anime_drawing_references.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9040/1687/files/63552511855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/filosofia_atomista.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/raxegivaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6955/4329/files/54717485972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/durukixojoguziwomokonebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5069/5830/files/94375186215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8624/1189/files/google_sheets_average_if_not_blank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2866/5752/files/linked_list_all_programs_in_c.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 2

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_off00006da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA8 5444 bytes
SHA-256: c77134a522dd8a136e1b0c0fd9949cc335492f0ad643b20823d86452f2f333d5
font_01_sfnt_off00008024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8024 9952 bytes
SHA-256: cc8959fd3f5e1791f34342ae8cdb8c1eb34a22ba14e8cb74f91b446032c7fea7

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