Malicious PDF — malware analysis report

Static analysis result for SHA-256 4049977ffb5fc61f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-23 17:05:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2aafabe920ccf3a0fca58e3d5fff61a SHA-1: 1a75b048a252c4695ec045c36234bfd63bb81297 SHA-256: 4049977ffb5fc61f060e130d7a676ff65a076a03e35ae7758346a4b439357c08
202 Risk Score

Malware Insights

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

The PDF contains text that mimics financial statement practice questions, a common lure for phishing. It embeds a link to 'ttraff.com', identified as a malicious redirector. The document also contains a mass of external PDF links, many hosted on Shopify, which is indicative of a link farm designed to improve SEO for malicious content. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=income+statement+and+balance+sheet+practice+questions In PDF document text
    • http://files.auroracbdhemp.com/uploads/1/3/1/1/131164063/8810406.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/1/0432/9439/2485/files/8782434951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/laxexiwanusosanogufux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7132/3804/files/hallelujah_sheet_music_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/51796023778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5353/1807/files/dumagofurumebepofifasobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/91762156429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9688/3868/files/numerical_methods_for_engineers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8308/6489/files/pixobiwavif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0252/7895/files/39974188291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7103/6835/files/redomesilesilorazer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1541/2632/files/62206591602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/97061666192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/17487372809.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_off000064cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB 5516 bytes
SHA-256: b4a015d9eb13dfcb54a2cc564143fb0381e0621ba4115db49e2bbebde525f076
font_01_sfnt_off0000773d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773D 10876 bytes
SHA-256: ef5e78431043a8d1088ed59a33173d1b5964a3bbe44d7f615785d1fcb001c990

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