Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0857cace14a9a6…

MALICIOUS

PDF

46.4 KB Created: 2020-08-22 07:24:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0159f345eec9ed9d84e219b27a1a9205 SHA-1: b18cf43ee16014e5effa0c5b5019c4fde5c50609 SHA-256: 7c0857cace14a9a611dd84ea661510e65522bf234f4d7354ba32e6a3a4dc2185
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, but one critical link redirects through ttraff.com, a known malicious redirector. The document body text, though heavily obfuscated, contains the same lure text and the malicious redirector URL, suggesting a phishing attempt disguised as a free font download. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=ascender+sans+wgl+regular+font+free In PDF document text
    • http://files.whimsicalsragdoll.com/uploads/1/3/0/7/130775182/ropegizulomexu_palini_vigise.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6164/0358/files/architectural_record_february_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2089/4886/files/49186376294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/microsoft_excel_2020_formulas_list_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/91171152062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/53454882528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/bijuruxolebedinowisiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/time_limit_for_reporting_accident_at_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/89993212839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/xodipexumedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/mupasarekovifabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wanojexabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8649/4361/files/58565890636.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 3

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_off00005948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5948 5104 bytes
SHA-256: 65c4fb6b688c80be8c1ba566a2fa221b52d6f9fd9d0b56c7b1cfbeeb27b5a0a1
font_01_sfnt_off00006aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABA 16564 bytes
SHA-256: eec127205ddd15c27039650bee006a774b6b6b4e1fb2a243beeaec893c69973a
font_02_sfnt_off00009d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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