Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba1c5653a89f908…

MALICIOUS

PDF

42.2 KB Created: 2020-08-02 15:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e3e0cac012f79727b45438a9b29681a SHA-1: 315d308031b63de814336a7ed110052515b47895 SHA-256: 5ba1c5653a89f9082c11039f737dfdfd80e7539a166e16d912b942852d483f58
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a list of other PDF files hosted on various domains, suggesting a link farm or a method to distribute further malicious content. The ML classifier strongly indicates maliciousness, and the presence of redirector links points towards a phishing or malware distribution attempt.

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=time+lost+proto+drake+spawn In PDF document text
    • http://files.logans-heroes.org/uploads/1/3/0/7/130739614/700476580d51.pdfIn PDF document text
    • http://files.deerbrushdesign.com/uploads/1/3/1/4/131453432/kamugilikikavuxoje.pdfIn PDF document text
    • http://files.yeastlipidconference.com/uploads/1/3/1/0/131070861/70f63.pdfIn PDF document text
    • http://files.13gfab.com/uploads/1/3/0/8/130814121/584f7e9b58746.pdfIn PDF document text
    • http://files.gilliantorckler.com/uploads/1/3/0/8/130874629/gomenevidi-kinepowa-xasokipa-xupuzateseroji.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/1/0437/0094/5048/files/silixogexazowitakupav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/59271500058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8136/7712/files/sipawajamunopuvot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2606/2239/files/13450465630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/gezujirimuleviji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/rarawafeburimimiruvep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/degepeguvefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0560/8099/files/2008_honda_fit_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0922/0503/files/46339083598.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_off00006786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6786 5208 bytes
SHA-256: 7ec8f2df4276e84f8f66605eba7a0451bb8ab3f2682d8de00688927627a52421
font_01_sfnt_off00007934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7934 10308 bytes
SHA-256: 99ea5a94d94e578e7b432fb942214a6c7037449010d4b0caf047ddeff780af31

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