Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60352356c6cb1cf…

MALICIOUS

PDF

38.1 KB Created: 2020-08-16 02:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ffe50838114f81b776aa6c65f2cab386 SHA-1: 9185d1b3a45edf3b15588ec2c25464aed766b600 SHA-256: b60352356c6cb1cfdc0d0ed0e1d48efc54f6ad35540dd74f6e9393ba59938f0a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wb?keyword=class%203%20maths%20worksheet%20time', is designed to lure users into clicking it under the guise of a math worksheet. The file also contains a PDF link farm heuristic, indicating a large number of external links, many of which point to Shopify domains, likely for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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=class%203%20maths%20worksheet%20time In PDF document text
    • http://files.couplesretreatmarbella.com/uploads/1/3/1/6/131636725/2046884.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/1/0432/2826/6654/files/16460313130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/59377998902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/83073818766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/99068418722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3273/0017/files/pexijiwabivamep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/mumbai_society_bylaws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/36993812674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/bethesda_bug_report_fallout_76.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0357/5447/files/lutezejufir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/57269259721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/48899891120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/vevaruzowevuligagol.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 1

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_off00005864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5864 5152 bytes
SHA-256: 88465e25ef79f5ba108aed941aa71708ee5aa1b105039d6547d59994a22daf3f
font_01_sfnt_off000069d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69D1 9992 bytes
SHA-256: c9922cba913a6e34e8022cdc162cb9f00442d73066d8cbb93803222f8c6b1c7e

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