Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacd66b992c1622b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-18 21:58:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4cfff3fe7d7d6acfc029b784770ecc5a SHA-1: 5870a57aa20536069a2f65c1fe2c85666c4a2027 SHA-256: dacd66b992c1622b10973550863aca431289e9d736be7662aa4e9c011f6dbb84
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, contains text related to 'website landing page templates free' and a URL pointing to a redirector. This suggests the document's primary purpose is to trick users into clicking malicious links by posing as a resource for free templates, ultimately leading them to malicious infrastructure.

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=website+landing+page+templates+free In PDF document text
    • http://files.cybercats5436.com/uploads/1/3/1/8/131857914/c2d0f4e7532903.pdfIn PDF document text
    • http://files.endlessoceansgozo.com/uploads/1/3/1/3/131380440/2d507.pdfIn PDF document text
    • http://xivunazar.protectgladewatershed.com/uploads/1/3/0/8/130873995/1292402.pdfIn PDF document text
    • http://files.fromagarden.com/uploads/1/3/1/3/131384401/riximilozemax-vopilanojowul.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/1/0434/3057/6278/files/24128651107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0140/4830/files/nixopoluxizujet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9988/5463/files/78148962437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/fusisanobenutune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/2425120117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7053/8406/files/zamafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/wixolixekefemexoxikew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/dubotuzarodabumajizixebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/evangelismo_dinamico_luisa_walker.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DA 5516 bytes
SHA-256: eb6fa199eadd993f8fbe44116cb3964df2b1e0dbb6f0d5802c1c4a1aae0aa4d5
font_01_sfnt_off00007479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7479 2268 bytes
SHA-256: 7f38c7bd3076d5ec567b373f8788658f617417f44aeaffad1c2d563936ecbb0a
font_02_sfnt_off00007e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E89 10132 bytes
SHA-256: bde7e9b3bec89f3895e8e2135696cd8ea7e21f29209e043c1eed1be4167f3b63

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