Malicious PDF — malware analysis report

Static analysis result for SHA-256 fecb552547530e44…

MALICIOUS

PDF

44.5 KB Created: 2020-08-10 14:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 179bfe5205a3ebc38677a8dd165c11c1 SHA-1: 5025dfc6c51f1cb87c6af826d6d5d245c3c81e69 SHA-256: fecb552547530e44394d22e55c8a522b48380c1a5f958810230526c73461c72b
254 Risk Score

Malware Insights

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

The PDF contains a lure promising free access to 'CCNA Cyber Ops PDF' which, upon clicking, redirects through a malicious link farm. The primary malicious URL identified is ttraff.cc, which is known to host redirectors. The document body, though partially corrupted, contains the malicious URL and other links that appear to be part of a link farm designed to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/pify?keyword=ccna+cyber+ops+pdf+free In PDF document text
    • http://files.hacd.org/uploads/1/3/1/4/131437378/2847984.pdfIn PDF document text
    • http://files.lyricallyjustified.co.uk/uploads/1/3/0/7/130775953/wikibuxo_jumewow.pdfIn PDF document text
    • http://xonowovus.calmcradle.com/uploads/1/3/1/6/131636725/03e2284.pdfIn PDF document text
    • http://files.recollectiveway.org/uploads/1/3/1/4/131408017/f723b92a39858d2.pdfIn PDF document text
    • http://files.travelwithsaranewbury.com/uploads/1/3/1/3/131380138/2502475.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/1/0439/2982/9544/files/curriculum_vitae_formato_para_rellenar_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2331/7662/files/wajalidavavel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/romokononezolivelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/blades_in_the_dark_rulebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/miresibejosolefowowuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/53747218625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9164/6880/files/10652652307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/87724050024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1412/files/45965739791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/etiology_of_type_1_diabetes_mellitus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/12423229241.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_off00006e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E35 5264 bytes
SHA-256: 540776816a961198428a084893dc4d702e5bd3e08081fc20a28ead30590a7a57
font_01_sfnt_off0000801a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801A 11152 bytes
SHA-256: e10a0cea171b91b2d39afb66111e21aa057c8cfaad80ef71f7f52a2fde9e44e5