Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2819f07de2c2460…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 22:55:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73203ec1065ee5e5852158dc18e18784 SHA-1: 8ebe1ae79bb6f190dfc9a795810a2428dbdcc173 SHA-256: c2819f07de2c2460eeb05d8a9fd5f8e013c917b89071ae2bf31c9a1ccb647106
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. This suggests the document is designed to lure users to a potentially harmful website. The presence of a large number of external links, many pointing to Shopify domains, indicates a link farm strategy, likely for SEO manipulation or to obscure the final malicious destination. The primary malicious IOC is the redirector URL.

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.ru/wb?keyword=adding%20pdf%20pages%20to%20latex In PDF document text
    • http://files.bellabugphotos.com/uploads/1/3/2/7/132710756/ruwiju.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/1/0433/3800/6686/files/62689764008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9684/2142/files/55895971263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2190/files/bhagavad_gita_summary_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/mizazeduwebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3563/files/nasenot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5562/files/lifopududajese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/riramak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/8578380444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55166802931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/transparent_hex_color.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/nutuva.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 4

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_off00005e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E98 5172 bytes
SHA-256: 63d383f598bd4cea60d94665ee583f1538865bace9879bdf18117094fe66b2c8
font_01_sfnt_off0000704b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 10668 bytes
SHA-256: 8422024903f5a092724e4b2400d2cc9aa819e6139e6910f897dfc59e0a0edf5f

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