Malicious PDF — malware analysis report

Static analysis result for SHA-256 3896860ec8c2238f…

MALICIOUS

PDF

41.6 KB Created: 2020-08-03 16:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f2455c1e0705c17cff5ad7af39a1fa3 SHA-1: db8c4f96209fdd3b95d4e22fff1615968457fb44 SHA-256: 3896860ec8c2238f824a3dc8bf0fefbd8287a25fa268b4139134bdb63b676cc6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the string 'Alphabet worksheet pdf' and the malicious URL, indicating a lure to trick users into clicking the link. The ML classifier also strongly flagged this PDF as malicious.

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=alphabet+worksheet+pdf In PDF document text
    • http://files.benkipiyako.org/uploads/1/3/0/7/130739379/biwumekuponukawo.pdfIn PDF document text
    • http://files.gogiddypops.com/uploads/1/3/0/8/130814063/gazovibigeda.pdfIn PDF document text
    • http://files.yukonhomes4rent.com/uploads/1/3/2/6/132696063/zinixemijikam.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/1/0432/8413/6086/files/69227978482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6756/3420/files/woocommerce_ajax_add_to_cart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2331/8686/files/magic_item_compendium_3._5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/53212461594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9221/3911/files/92256603267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/livro_bachelard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/lelekefiburitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/fundamental_mathematical_statistics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/namovuneroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3391/8616/files/domozuzogasujun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2114/files/warren_buffett_rules_of_investing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/winisitew.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_off000064a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A7 5412 bytes
SHA-256: 0b2cc68c2355dad5b1f361efada45a94fd642b1f55bdb0d22c29ec7adb7d1bd0
font_01_sfnt_off00007714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7714 10136 bytes
SHA-256: a3c2be918dbf68b0f8505f2064e9f150dc4e33c78f7635cc7fb7d35084813021

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