Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccff5f1c6befb566…

MALICIOUS

PDF

41.8 KB Created: 2020-08-18 13:15:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 297654a9ca450bcc63650b91b1b15e38 SHA-1: 3f9ab76bc03b9207d96b2e9eec9247e51c91294a SHA-256: ccff5f1c6befb56623f114432d41e62d99ccee89509a5364422e7ba48e47d967
194 Risk Score

Malware Insights

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

The PDF document contains text and embedded links that mimic a Bitlocker utility for Mac OS X. The primary malicious indicator is the embedded URL pointing to 'ttraff.com', which is identified as a malicious redirector. This suggests the document's purpose is to trick the user into visiting a malicious site, likely for further exploitation or credential harvesting. The PDF also contains a link farm, indicating a broader SEO-based distribution strategy.

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=bitlocker+for+mac+os+x In PDF document text
    • http://files.grassingtondevonshireinstitute.org/uploads/1/3/2/6/132682561/jimupob-notozos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/fudila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/1733129711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/29211659791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/cgeit_review_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/48312692517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/kindle_android_read.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9953/files/41634951481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1484/8671/files/cerwin_vega_vpas10_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005940.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5940 4892 bytes
SHA-256: b5c47d8b75a23cc174497e8a52533457a2e5e0413beb1237ba5ce9dec2b223c6
font_01_sfnt_off000069db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DB 10284 bytes
SHA-256: 0374467b12e828014971de5d03a9c7aceb1bfddd0a873a4a9ef2963b71a1b58b
font_02_sfnt_off00008d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D1C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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