Malicious PDF — malware analysis report

Static analysis result for SHA-256 da68c05461401884…

MALICIOUS

PDF

44.4 KB Created: 2020-08-01 02:07:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eee2a98a8963b88142a5e67ced3a9ef1 SHA-1: 62f32cebc896aea061444c381f3f375b2e67ce28 SHA-256: da68c05461401884748a12ba52b2208fd17b26873a6e4a0119dc9e7e61b57f17
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=does+discord+delete+old+messages'. The document body, though partially corrupted, contains this URL and a question about Discord messages, suggesting a social engineering lure. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to malicious infrastructure via embedded links.

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=does+discord+delete+old+messages In PDF document text
    • http://files.brunerscience.com/uploads/1/3/2/6/132681517/jolup.pdfIn PDF document text
    • http://files.hsfhomeconnections-uso.com/uploads/1/3/1/8/131856353/416073179.pdfIn PDF document text
    • http://files.honorboundco.com/uploads/1/3/0/7/130776295/4579884.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/1/0435/7881/8715/files/fejar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6463/1189/files/foponixefuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8123/6634/files/juxaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/28253554497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5613/6341/files/17399405661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/noren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/resemupijebegezamuxelixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5750/files/logipevubix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/jamenivibipomiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/43542883306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/kuxaxibupenofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/rapejomilevigeg.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEA 5260 bytes
SHA-256: 71dbeca6925d099971e1fc65135c0c333826f5e3207c5974e274ea4d84f7cb18
font_01_sfnt_off000081b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B5 10220 bytes
SHA-256: cebcfd23c32d14981f64aa750ad108336590c72b941e12073667b19a17648f38

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