Malicious PDF — malware analysis report

Static analysis result for SHA-256 83dc132f598299e6…

MALICIOUS

PDF

45.1 KB Created: 2020-08-17 10:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 946fa6b3e002184a11efd1bddbda3bc6 SHA-1: fc9c74d1b358b988f6a5e5f08b2901917c4706e3 SHA-256: 83dc132f598299e6a02e0ae1015d245f455d4602f98369b94e2f821654443052
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that point to redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=cdburnerxp+portable+free`, which is flagged as a malicious redirector. The document body also contains numerous links to PDF files hosted on Shopify and other domains, suggesting an attempt to create a link farm for SEO purposes and potentially distribute malware. The presence of a 'download button' heuristic further supports the lure of a malicious download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cdburnerxp+portable+free In PDF document text
    • http://venitiw.david-arnebeck.com/uploads/1/3/0/7/130776131/5895191.pdfIn PDF document text
    • http://rekuxokaf.yonelfashion.com/uploads/1/3/2/8/132814930/bolagipov.pdfIn PDF document text
    • http://files.sundancecrow.com/uploads/1/3/1/3/131380288/00eb0ecb63.pdfIn PDF document text
    • http://files.coastalk9c.com/uploads/1/3/0/7/130775180/0f293051ea7.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/1/0432/2256/5032/files/botepepirofofujojimaxov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4923/8179/files/majarutowilobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/ssh_file_permissions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3135/5807/files/codex_gigas_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/9124/1634/files/have_been_vs_have_gone_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/13756428050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8734/7360/files/android_game_engine_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/55425346768.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 6

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_off000072c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C4 4968 bytes
SHA-256: e4b95e9a1ec80c7acfc2ac8858d4a02aab6a2b24dc2af9cdf5b2df1be1ced0b5
font_01_sfnt_off000083b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 10740 bytes
SHA-256: 760e7c5264be3c6943b700114bbc4a06720f75700465f9f031662aae136e4b86

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