Malicious PDF — malware analysis report

Static analysis result for SHA-256 7526c726aad5d59e…

MALICIOUS

PDF

34.0 KB Created: 2020-08-19 09:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd77995633e077dba6edd25e7d561640 SHA-1: 19ef910b0fe32434c02a12c11a6405b7de4b1b21 SHA-256: 7526c726aad5d59ebaa8a143b78e61c7f05aa9cbf4dc50f64c44d07cc02552ba
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL pointing to a redirector. The ML classifier also strongly flagged this PDF as malicious, suggesting a phishing or scam attempt.

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=football+revolution+2018+game In PDF document text
    • http://files.kikapoosphynx.com/uploads/1/3/1/3/131380641/silokasifabex.pdfIn PDF document text
    • http://files.momwhogivesaflax.com/uploads/1/3/2/8/132815791/9144541.pdfIn PDF document text
    • http://jatuzara.curiosityyogaandcoaching.com/uploads/1/3/0/8/130874304/sanititimutapuz-bigexub.pdfIn PDF document text
    • http://paraj.baycountrycrabbingsupply.com/uploads/1/3/2/6/132681670/tavuripixedavirefiro.pdfIn PDF document text
    • http://files.springstreetanalytical.com/uploads/1/3/1/4/131453288/ff02a6.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/1/0448/6758/4162/files/livro_biotecnologia_industrial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2529/0648/files/lerarerodutipurupelon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9423/7589/files/descargar_cancioneros_para_guitarra_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/12558854937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9446/5948/files/cantate_domino_elberdin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/md_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5789/5829/files/4182591741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2174/6847/files/zozemol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/5227168576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9898/7941/files/xowatojerikuwidat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/6760/5927/files/coolie_no_1_bhojpuri_movie_mp4.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 3

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_off0000497b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x497B 5500 bytes
SHA-256: dd07496afad44678538a322ab285b0ffc345a8c267a2d63a79c599bccfd4ffae
font_01_sfnt_off00005c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C23 8968 bytes
SHA-256: 110719efa0313940ca361f96e6f3b1167339341a98e6e1b7ca474b9855579014

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