Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a42004f661f0c7e…

MALICIOUS

PDF

45.3 KB Created: 2020-08-28 14:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50cad300272c0579c51e21ef1a0f3c7f SHA-1: ac2760d55f46c287e282aee1f92d350d9f6a3d30 SHA-256: 5a42004f661f0c7e1744f548ef8fe89c74e725b73613937e04d427d231c95b29
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing lure. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection scheme. The presence of PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics strongly suggests a malicious intent to redirect users to 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.cc/pify?keyword=is+nancy+drew+and+midnight+in+salem In PDF document text
    • http://tunuragu.apextravelogue.com/uploads/1/3/2/8/132814956/0f32dbbbc.pdfIn PDF document text
    • http://files.jengetslost.com/uploads/1/3/1/0/131070751/3543567.pdfIn PDF document text
    • http://files.worthvillepreservationgroup.com/uploads/1/3/1/8/131871633/defavezupemu.pdfIn PDF document text
    • http://files.micasmith.com/uploads/1/3/1/3/131384635/45e901d7d6.pdfIn PDF document text
    • http://files.northolmstedgymnastics.com/uploads/1/3/0/9/130969306/kosonikugaloweg.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/1/0440/5123/4981/files/pupegexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2852/6742/files/ims_advanced_vocabulary_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/34322936826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2021/2645/files/85865922236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7742/7349/files/59499047466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/0512/5281/files/18771238107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0057/files/29945039784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/8691/4212/files/optiplex_790_audio_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/1554827755.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_off00007375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7375 5484 bytes
SHA-256: bca0ef5fb0b72a46706c2f999ab29595d67c825309d8c1e576caa9e5324dc1a6
font_01_sfnt_off000085f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F9 10120 bytes
SHA-256: cb179f741dd326b589182a19b59ac3fea62775fba92a467af07df5970817ca34

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