Malicious PDF — malware analysis report

Static analysis result for SHA-256 66574d43fdd71039…

MALICIOUS

PDF

58.4 KB Created: 2020-08-04 04:56:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b16235f855020010ccdd0193b82972a0 SHA-1: e5cecd316cd7955ffd71d474da339493562b7a18 SHA-256: 66574d43fdd710397141593e69bbae95954cfc5d10bccc82a6c2f2275b1a0ad6
194 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically `https://ttraff.ru/pify?keyword=free+printable+binder+covers+pdf`. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of redirector links confirms a malicious intent to lead users to harmful content.

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.ru/pify?keyword=free+printable+binder+covers+pdf In PDF document text
    • http://files.megacandyimporters.com/uploads/1/3/1/4/131454459/jujulerupubaze.pdfIn PDF document text
    • http://files.isbhu.com/uploads/1/3/2/6/132681891/siduwekemudonijokuvu.pdfIn PDF document text
    • http://files.markcreative.ca/uploads/1/3/1/8/131871744/7cf6c7fd8d2bc.pdfIn PDF document text
    • http://files.btaccountingandtax.com/uploads/1/3/1/4/131437670/8a32a3c.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/1/0435/3287/7976/files/60063250461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/97722101315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/holt_environmental_science_online_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/mejinawisukikimiwuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/gusewebuxojedub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8782/1981/files/zinubeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8495/5300/files/15057088227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/buxanumesopuvewuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/61997099935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1689/5133/files/14046153361.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00008fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB7 5304 bytes
SHA-256: 451c9ec4f29d70613300d5a72970783853033b42e782c947ad798785302483cb
font_01_sfnt_off0000a1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1D0 11000 bytes
SHA-256: 4f2744065a439171c65230ee2b915e4ecfb740d2ff994fd94e6b68eee5233e5f
font_02_sfnt_off0000c77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77B 16088 bytes
SHA-256: ccf42771811f3bfcfc4881e0ea26c61020463520b77f542a172ed5d532e4d210

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