Malicious PDF — malware analysis report

Static analysis result for SHA-256 669b8967d57cc2ef…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 11:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ab8ce098e29c063427672b2e8da11ce SHA-1: c37b32ab248fc343a36f888477c21be62ae4d162 SHA-256: 669b8967d57cc2ef1268e9e4a89eb99fde5abc92bd98f995c03209356eab9c93
242 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of an advance-fee scam, using lures related to free downloads or prizes to entice users. It contains numerous links, with a primary redirector URL pointing to known malicious infrastructure. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=entrepreneurship+successfully+launching+new+ventures+purdue In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5fd5c1_51667dfdb0f2408c99f5496248e38dfd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/93971e_9c294f45dd234767baa8f7795fd339ab.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9c43ec_87d222c05e674c509d41e0eb8e694805.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/913720_2837f3029cdf429aa63cb9637b1fd30d.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9293/files/memupipemejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5815/1070/files/jifowijoxagete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9007/4016/files/mcgraw_hill_answer_key_algebra_1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a86d68_1b1115b6d7014e2fb5f0f82adeefa64d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_bf741a8d945f49c5a699f7df45f2abdf.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_24841f9d180540919a1375c8fd60701a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_4a52eb78221f4fe49f00f493dab48e00.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_off00005f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0A 5628 bytes
SHA-256: fc3c3822f934ad138193e24bc2f98362621536f2fe76e5bb9d15c1cbbd838cdf
font_01_sfnt_off00007248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 10208 bytes
SHA-256: 55f9c8454b68f047c0e522ec819f9ba570c6a4b554bdeb0e20ce531b13cfd465

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