Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dc7125bce9584cb…

MALICIOUS

PDF

52.0 KB Created: 2020-08-12 07:00:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a6f6d5c3a9da859ae876fd501875be8 SHA-1: 93c70f1d5b26e5230e05564e8a5debf36fe433be SHA-256: 5dc7125bce9584cb2bf9b04e6fcb7237c7591b3b80c7737b1ec31062a1c0942f
194 Risk Score

Malware Insights

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

The PDF contains multiple links designed to appear as legitimate documents, but they redirect to a malicious domain (ttraff.ru). This indicates a phishing or scam attempt, likely to trick users into downloading further malware or providing sensitive information. The ML classifier strongly supports the malicious nature of this PDF.

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=deped+affidavit+of+undertaking+annex+3+pdf In PDF document text
    • http://files.ccsfmarketing.com/uploads/1/3/1/4/131482953/zitapinerotitu.pdfIn PDF document text
    • http://files.emi-ceramics.com/uploads/1/3/2/6/132681066/8337133.pdfIn PDF document text
    • http://files.drheatherloenser.com/uploads/1/3/1/8/131858916/4677354.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/1/0433/0127/3768/files/valorexawekolediragababuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8232/3870/files/wordly_wise_book_9_lesson_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/kejigokota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/43144440399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/lopafibalorizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6742/4412/files/38232444788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/mabewuribadatapara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6192/6293/files/17834526959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/juzobuvaxuzurenuxoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/43491688345.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_off00008d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4A 5356 bytes
SHA-256: 03841c36a03acc4af001f997de10cb2b52a090ee80b047c8ee2a71a4593867d9
font_01_sfnt_off00009faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAA 10208 bytes
SHA-256: 6f2dd4b775c4ed89810d2bc0dc5e9d8180fe0c323eeb6319299274d3ab198a16

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