Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa2150a0c06e3ba…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 16:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d3de7fde74f778476f4da0f2d88252a SHA-1: fe2f4b5449323c3d9c474e8e6ee77b3d42ce0100 SHA-256: caa2150a0c06e3bacde8b11fdc4549e704b8b8581f243bf34e76f41b121c6b9a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the primary links leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests that the document is designed to host a large number of external links, likely for SEO manipulation or to distribute malicious payloads through a chain of redirects.

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/pify?keyword=classification+des+actinomycetes+pdf In PDF document text
    • http://lisaban.cgarrodart.com/uploads/1/3/0/7/130739564/5944715.pdfIn PDF document text
    • http://files.jasna-orswwa.org/uploads/1/3/1/4/131406749/kolatezu.pdfIn PDF document text
    • http://gigipumul.beeparksandthehornets.com/uploads/1/3/0/7/130776542/5dd60f1d6.pdfIn PDF document text
    • http://files.embassyrow-properties.com/uploads/1/3/0/7/130739450/6889841.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/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/atlas_12x36_lathe_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/19277717008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/kenmore_elite_washer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/kozosisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/73777622100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/78145949504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/16376464333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3398/files/how_to_keep_your_computer_awake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/becoming_animal_david_abram.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 2

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_off000062bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BC 5212 bytes
SHA-256: 646fff32c04f1fa690b043b635d5f3bd56c09adb0720b1430eba59dc9f4b8bbc
font_01_sfnt_off00007473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7473 10176 bytes
SHA-256: f93e617302635693d634733ef36ea0f23bc5caaa1a77e98e67be607fb108d818

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