Malicious PDF — malware analysis report

Static analysis result for SHA-256 1768047ab5d50f47…

MALICIOUS

PDF

48.5 KB Created: 2020-08-10 07:05:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44d9ecdabe64b2722ca8416e490f1c98 SHA-1: 2d78b08815e4c664aaf9586837995d08319cd706 SHA-256: 1768047ab5d50f475a48e4ff950e4772eb3308ecdf578e4db2e63d8f25addeac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links designed to appear as a free download for "Uml diagrams for banking system pdf". The primary link redirects to known malicious infrastructure at ttraff.ru, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, supporting the observed link farm and redirector behavior. No scripts were extracted, but the document's structure and embedded links are indicative of a social engineering attack.

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.ru/pify?keyword=uml+diagrams+for+banking+system+pdf In PDF document text
    • http://files.myworldsparkles.com/uploads/1/3/1/4/131437878/vudobujoxuvetozusu.pdfIn PDF document text
    • http://files.anelelundborg.com/uploads/1/3/1/4/131453022/ponowuxepevafod.pdfIn PDF document text
    • http://files.lesleehampelphoto.com/uploads/1/3/1/4/131406744/gixukemesolage_bizoxaxijanaxud_xabobe.pdfIn PDF document text
    • http://files.capetowndaytours.net/uploads/1/3/0/8/130874629/bugob-bowon-jozopo-vudux.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/1/0431/8671/6830/files/66521182960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4474/1024/files/meaning_of_business_ethics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/yahoo_mail_read_receipt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/54832817057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/467339804.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2212/1122/files/38330765154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1396/2919/files/anemia_hemolitica_autoinmune_neonatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1181/6099/files/31998435985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/red_black_tree_properties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4254/4533/files/37606728495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/64378130024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3577/6408/files/afcat_exam_preparation_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 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_off0000778b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778B 5660 bytes
SHA-256: 30a4b16e84320b8b649cd5cdbfe350710612d8d03095b35e9c594cb584543d42
font_01_sfnt_off00008ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC1 13600 bytes
SHA-256: c39c98ee1bba7bff7c74c952c074391814c767887951f7992cf639dcd2285842

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