Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fddef616bbb03fe…

MALICIOUS

PDF

46.6 KB Created: 2020-08-11 13:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ffc915edfb39eaad9a73b24292d784e SHA-1: 56d1efa4965a62ef9fd6d9dd84296664c8d3fd2f SHA-256: 7fddef616bbb03fe0943c60a5086a3fcd335ff881cc585e4fe6af41783e7e850
194 Risk Score

Malware Insights

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

The PDF document contains numerous links, many pointing to a redirector service at `ttraff.ru`. This service is flagged as malicious and is used in conjunction with SEO link farms, suggesting a phishing or malware distribution scheme. The document body itself contains garbled text but also includes the URL `https://ttraff.ru/pify?keyword=chestionare+redobandire+permis+2020+pdf`, indicating the lure is related to obtaining a driving license. The ML classifier strongly supports the malicious verdict.

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=chestionare+redobandire+permis+2020+pdf In PDF document text
    • http://files.wanderingmusicians.com/uploads/1/3/1/6/131606284/ranigimon.pdfIn PDF document text
    • http://wutedi.ozfreedomtechniques.com/uploads/1/3/1/6/131607062/gunalugerefujowitamu.pdfIn PDF document text
    • http://files.suzannejohnsonsart.com/uploads/1/3/0/8/130814515/wibolamazuva.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/1/0432/8249/7701/files/situpanojop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/conference_de_bandung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/kovewipekif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/fuxafajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7260/0726/files/japadifikivokomoduzudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/6078810955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/beauty_s_release_anne_roquelaure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/xejubajolujixabezowubinaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/pujavesujapato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/52753076173.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 3

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_off00006aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAE 5472 bytes
SHA-256: db44b44e0eb643c595dcbc1bf506880690a9394b90eae8302d825ec24dc8670e
font_01_sfnt_off00007d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0C 10060 bytes
SHA-256: b62096234288a52f1374abac84dfcb29709b658ed8680023f1c5c0f458e6a9c9
font_02_sfnt_off00009f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F28 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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