Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bbf5af9dc1c9b18…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 15:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05bc752d76ca7e567bfc0c9fecbd2d08 SHA-1: 706dfac622778a2f88c038c897d8c302d835847d SHA-256: 6bbf5af9dc1c9b181627df8761b09397bceabe3fd0ade76689f283c73b155e86
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector and part of a link farm, specifically designed to lure users via a 'free dictionary' pretext. The embedded URL, https://ttraff.ru/pify?keyword=english+to+russian+dictionary+free, is flagged as a known malicious redirector. While no scripts were extracted, the PDF structure and embedded links strongly suggest an attempt to direct users to malicious infrastructure, likely for phishing or malware delivery.

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=english+to+russian+dictionary+free In PDF document text
    • http://senolina.newcanaanpizzaandtaqueria.com/uploads/1/3/1/1/131164250/malapilusekobok-wumalotave.pdfIn PDF document text
    • http://files.tinablanck.com/uploads/1/3/0/7/130739744/luvebututipe-nokulemeku.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/1/0429/2280/3363/files/79408500796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/luzamoxalikiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7065/1542/files/ameba_pico_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/detakeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0890/4603/files/fashion_brand_identity_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/pipukipubunodariz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3917/5335/files/kewuvixuwasitoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6845/6102/files/81617964387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/27535233155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/1161892356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/rabobojofirujuvikazijab.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 7

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_off00006d16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D16 5344 bytes
SHA-256: ce140b4d88cf1c1aafcb085c9da032f0b57d05f168800e86f6c89a0346ed0d09
font_01_sfnt_off00007f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F40 12396 bytes
SHA-256: b3b0698c4fe15fe22697e402f900df8d1b35d738c818dc0c7cc1e9fc1be505aa

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