Malicious PDF — malware analysis report

Static analysis result for SHA-256 67bd3644e1646141…

MALICIOUS

PDF

43.9 KB Created: 2020-07-31 21:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 62c834ff3807b5bde8ee05756e6bd3e1 SHA-1: cf36fb66b9771c91aa00035f2350f3764391c947 SHA-256: 67bd3644e1646141a8479ca3e935a9ba993399925af7c4f7f1286583280f0c76
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector infrastructure, suggesting a link farm or phishing campaign. The primary malicious link, 'https://ttraff.ru/pify?keyword=how+to+enable+freesync', is identified as a malicious redirector. The document body, though partially corrupted, contains this URL and other Shopify links, indicating a lure for users to click through to potentially malicious 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=how+to+enable+freesync In PDF document text
    • http://files.retroquesting.com/uploads/1/3/2/6/132681951/fosalevef.pdfIn PDF document text
    • http://files.greenwoodtoylibrary.org.au/uploads/1/3/1/3/131383771/ririsufal.pdfIn PDF document text
    • http://files.alextissiere.com/uploads/1/3/0/7/130776599/7127169.pdfIn PDF document text
    • http://files.laurenceremacle.com/uploads/1/3/1/3/131383791/06b8bbf2d.pdfIn PDF document text
    • http://files.pronkzaak.nl/uploads/1/3/0/7/130738974/zided.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/1/0429/9322/1783/files/9884335300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9886/3771/files/2_digit_addition_and_subtraction_with_regrouping_worksheets_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/sukuweboxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0696/6429/files/59442577018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2272/0924/files/jodoridi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4627/9080/files/lisenaxijug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/palafasejuzanuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76588695657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/16263400841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/viwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/49106652300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/sunni_islamic_books_in_urdu_free_download_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/konudivabepag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7727/8627/files/1991604624.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF2 5168 bytes
SHA-256: 916475f46b624038774a9c954ec98a004c4995ad08f051f550d6b54a488ef000
font_01_sfnt_off00007db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB3 10876 bytes
SHA-256: 085b89d9d8596901c7562dfb5aec0776cfe52ee6c464b9a100c7c5377853ce0e