Malicious PDF — malware analysis report

Static analysis result for SHA-256 c97ec7f620bf5662…

MALICIOUS

PDF

45.1 KB Created: 2020-08-23 18:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63cf1bd5d8cc5971c02a53916eea62c6 SHA-1: 697b5a4511e513a674ea8a988868a1081cb58571 SHA-256: c97ec7f620bf566235c27b4ea1d6edb64d71c79fdfeec867ba4b0e751b318d86
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'critical path template xls' download. This link points to ttraff.ru, which is known for malicious redirection. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains hosting other PDFs. The presence of a visual download button further supports the lure. The primary intent appears to be directing the user to a malicious site via the ttraff.ru URL.

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=critical+path+template+xls In PDF document text
    • http://resoje.kalnics.com/uploads/1/3/1/4/131409167/237f2919.pdfIn PDF document text
    • http://files.johnsonwriter.com/uploads/1/3/1/4/131453151/8866908.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/1/0428/8462/8633/files/89693308839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/dilewarakolesudipar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8094/7614/files/zunalibezobupireneje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/el_imperativo_categorico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/72236038631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/59883204742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/jojufuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8077/files/9877859849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/zuzabinevoduguwivirelasun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/32700244022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/system_analysis_and_design_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3603/2674/files/bohemian_rhapsody_piano_sheet_music.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 4

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_off000073be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 5148 bytes
SHA-256: 9ade13d52ea4b5a0d3d55620b038f1771353ecbc65fabf5610e1d90183bc66c8
font_01_sfnt_off00008514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8514 10260 bytes
SHA-256: 8171c371f2703c65c4342ee6101a0c345aa36415a224a7f9d087aa651e944463

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