Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddeb0af7257c7357…

MALICIOUS

PDF

41.4 KB Created: 2020-08-16 15:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc4afa7a03664e22f7dd5226a3e174db SHA-1: df81c7cf2d45187b082694aa855778909bc70fe0 SHA-256: ddeb0af7257c73575755e59574f63a9310adef9ea77999ff57c4ee287157f6b9
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the same URL and keywords related to a physics worksheet, indicating a lure. The heuristic firings confirm the presence of malicious redirector links and a link farm, suggesting the primary goal is to redirect the user to malicious infrastructure.

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.com/pify?keyword=gravitational+force+between+two+objects+worksheet In PDF document text
    • http://wevove.zagarefringe.com/uploads/1/3/0/8/130814020/48494.pdfIn PDF document text
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdfIn PDF document text
    • http://files.savebozeman.org/uploads/1/3/1/4/131408529/80336d.pdfIn PDF document text
    • http://kidesa.cumnockactionplan.org/uploads/1/3/1/6/131606289/3c85ea54ad0dbf.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/1/0431/3592/6434/files/96350183873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3391/9645/files/31508720518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/bufunuvaxugikire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0021/files/nigow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/70196753066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2381/8139/files/kebumopilerozinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/minatomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/ford_mustang_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2780/8935/files/51239075777.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 8

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_off00005be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE6 5432 bytes
SHA-256: e4215c31ec7bd3dbcd73897931a31953ca002cba5c9d1330122a52dbd11276bc
font_01_sfnt_off00006e7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7C 13312 bytes
SHA-256: b4f9bad56318b5d350b1c4e1274a1009840fc878893aff36289994aab649a62d

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