Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ab3792afb5d5a6e…

MALICIOUS

PDF

33.6 KB Created: 2020-08-12 10:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86dff8e933feb906ee86fc08271fe408 SHA-1: 8e2b2d5f1b9f5404d3304e919ed2ea89b1fcaa34 SHA-256: 0ab3792afb5d5a6ecbab14975935e853bfc45718ca0d8a9c254e3b733dfc80a4
202 Risk Score

Malware Insights

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

The PDF contains numerous links to SEO-optimized content farms and a primary redirector URL, suggesting a phishing or scam campaign. The document body, though heavily obfuscated, contains text related to document conversion and the malicious URL, indicating an attempt to trick users into clicking malicious links. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=convertidor%20de%20word%20a%20pdf%20gratis%20love In PDF document text
    • http://files.winterhomeschoolconference.com/uploads/1/3/1/4/131437655/xekekasiril-sedusudorawap-mifeniwetipomas-dinuwidutakezux.pdfIn PDF document text
    • http://files.platinumdancecompany.com/uploads/1/3/0/7/130739393/3236644.pdfIn PDF document text
    • http://bivuta.umna.org/uploads/1/3/2/6/132696051/c67293.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/1/0430/1019/5605/files/xejoliseraginumizosavebij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/demotufilonameviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/catholicism_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/sixez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/florida_class_d_security_license.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5448/7969/files/rekalanunozukawudodaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7765/4935/files/bargaining_power_of_customers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8073/files/onan_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8048/2970/files/72472380818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/79561610765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3751/5176/files/wurinezipet.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 6

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_off00004695.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4695 5264 bytes
SHA-256: 2cd43efb54f23baee5c42158b24ffd886b8e19c5aa534d602831f301a856e31f
font_01_sfnt_off000058a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A0 9648 bytes
SHA-256: b72a9b0f4aa90d06865cb9bcb0a1262ca9c751543790c4c5251605c623464965

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