Malicious PDF — malware analysis report

Static analysis result for SHA-256 21429078a20cfdea…

MALICIOUS

PDF

47.9 KB Created: 2020-07-30 17:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6ec6bfa71a663b387cf82799a46eefb SHA-1: fe2eeb1eb40f1283ecdc160db6833aea34dc099c SHA-256: 21429078a20cfdea66ec7dcf9012e62bd3269054badab1693681d25f7fa5d2a7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a redirector link to 'ttraff.cc'. This suggests a phishing or malware delivery attempt. The document body, though heavily obfuscated, contains text related to 'Puritanism in the scarlet letter pdf', likely a lure to entice users to click the malicious links. The presence of a link farm heuristic further supports the malicious intent.

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=puritanism+in+the+scarlet+letter+pdf In PDF document text
    • http://files.hungyingleeart.com/uploads/1/3/1/3/131380397/sutafabalinofi_bemijixi.pdfIn PDF document text
    • http://files.autumnbeckman.com/uploads/1/3/2/6/132681976/tesedurizuturib-xokewiwitos.pdfIn PDF document text
    • http://files.marcio.ankarfeldt.com/uploads/1/3/1/3/131383934/3078782.pdfIn PDF document text
    • http://files.prettylittlenurse.com/uploads/1/3/0/7/130775200/8658276ed7eb123.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/1/0428/3321/5644/files/12541410294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peposorutap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/52607205390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/33415648220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0840/files/61837165137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3035/5866/files/6511269765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/8297172902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/90372065124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8660/0609/files/5649581987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/kirikarabepixarodebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/tenasadunimasi.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 5

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_off00007f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3E 5168 bytes
SHA-256: 0a778a86e5dd92702e81305e2f88c6cebee4152a22a1ed6a75c1bd551c20e2a0
font_01_sfnt_off00009098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9098 9964 bytes
SHA-256: a5574f6768c03a6ecc8b7248e29a1db761b72d3c2b47bfe0462983cfb4d332c6

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