Malicious PDF — malware analysis report

Static analysis result for SHA-256 c784962344397f34…

MALICIOUS

PDF

48.8 KB Created: 2020-09-07 08:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e45f3a8280668df8b338afa052e33ff SHA-1: 8355d9c8dc00f2221340ab15f10bc46f995a5672 SHA-256: c784962344397f34f3e35bf35eb2e91c431db7b8ea7a69bc239b1585d7455bf1
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 link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at ttraff.me. The document body, though heavily obfuscated, contains text related to 'phonics activities for kindergarten pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The ML classifier also strongly indicated maliciousness.

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.me/wix?keyword=phonics+activities+for+kindergarten+pdf In 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/1/0432/7541/9798/files/capitalization_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9930/8711/files/vezuxavekusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/nelore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/surasiluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5536/3734/files/nuteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2166/2365/files/minority_report_2002_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8873/1546/files/57596359400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6636/6869/files/mcgraw_hill_algebra_2_textbook_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/nonverbal_communication_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4504/3876/files/pdf_botany_mcqs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/how_to_get_looting_enchantment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2264/6422/files/abordagem_qualitativa_livro.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

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_off000069b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B0 5508 bytes
SHA-256: da871bbc53497a762450cbc0d885dc91541b4536d681d2eecf2d8a5c478596b4
font_01_sfnt_off00007c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C79 10320 bytes
SHA-256: 1bb42a63f4747f2b972bb1512e08f7f1fcaf1c4fd0fe26367eed42bba50d5929
font_02_sfnt_off00009ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FFE 16448 bytes
SHA-256: b7c299703b3dd81765663870cd96ff12ce36bab60d46ac4ddf719f3c8dfc5471

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