Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf748df4ab9a7f39…

MALICIOUS

PDF

42.2 KB Created: 2020-08-16 14:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb5664206094a12a8a2f06afa6ece478 SHA-1: c0de04295705b02e9a6c29a35981566acfbe254a SHA-256: cf748df4ab9a7f39fbb04c731c9e15e26ecd516da42851eb39cd52c65dd792a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, however, redirects to a known malicious domain (ttraff.cc). This suggests a phishing or redirection attack, likely intended to lure users to malicious content. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=los%20arboles%20que%20mueren%20de%20pie%20pdf In PDF document text
    • http://files.titanwrestlinginstitute.com/uploads/1/3/0/7/130740189/29ba8d65faa5a.pdfIn PDF document text
    • http://lexivas.masdogs.com/uploads/1/3/2/3/132303052/9722103.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/1/0435/2330/9727/files/icloud_contacts_to_windows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5474/3200/files/countif_function_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/tesezizimaxefozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/physical_properties_of_activated_carbon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9595/files/basic_electrical_engineering_book_free_download_author_kothari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/95355972413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/14590229105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/dnd_5e_kensei.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2247/4651/files/femotetowunoluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/wedipikutajigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/android_cardview_set_corner_radius_programmatically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/20342499702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7007/0687/files/goosebumps_books.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 4

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_off00006364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 5396 bytes
SHA-256: 3d299c0605fe7c7eaa1e05ef083c9d37fda9696fb4844261fb9ee347cb2048c6
font_01_sfnt_off0000759d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 11300 bytes
SHA-256: e5c9f23150c9648f1d9a65a8ca898043e11e50348c7eb78389b5a4aed419e6a3

Open this report in the interactive analyzer, or submit your own file for analysis.