Malicious PDF — malware analysis report

Static analysis result for SHA-256 2357b2a675a2e435…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 00:58:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69c77ee6f7b4d92936ec66fec73cc354 SHA-1: 089f8433d0c91483f921507593d842f146d2e68a SHA-256: 2357b2a675a2e4355e2436043f5e4c67d2b85c09122569c7fa2e134d167b6742
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=jurnal+alkalinitas+air+pdf', which is also flagged by heuristics as a malicious redirector. This suggests the document is designed to trick users into downloading further malicious content or visiting phishing sites.

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=jurnal+alkalinitas+air+pdf In PDF document text
    • http://files.pemachenacu.com/uploads/1/3/1/8/131858287/fememizukuse_poxutotogo_rizukidilemor.pdfIn PDF document text
    • http://files.marcytcm.com/uploads/1/3/1/4/131438405/71db4.pdfIn PDF document text
    • http://dujezofen.lisawebbermusic.com/uploads/1/3/1/1/131163590/fepipetamuvob-pitumuxoto-lexerimir-kurolegukenar.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/1/0427/9359/9132/files/35581821852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0060/2525/files/dufosufuxexuresuzatoxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/barocco_storia_dell_arte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/56873201860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3794/files/60647554848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2341/8019/files/44542204118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5249/9098/files/50457874283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3556/4959/files/japoridiwopumurobegagum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5538/0630/files/17914905376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4345/4102/files/applied_linguistics_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8281/7441/files/arnold_blueprint_to_cuts_phase_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/how_to_speak_english_fluently_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/tizavewipevevurepugoko.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 5

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_off00006be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE4 5088 bytes
SHA-256: e9f84f5afda96c1b05995379bf443701e2b67d1d7cf86e76fb891d4e030be4bb
font_01_sfnt_off00007d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D44 9944 bytes
SHA-256: 041a7dfb1280a354822d8e642efa8bd4368e289320ee2e11c1ca3b5789809f5d

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