Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5c884b6b3648a96…

MALICIOUS

PDF

47.0 KB Created: 2020-08-06 06:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03e3fad5922639182c45b46ab91b70e2 SHA-1: d9ddcefb171238002ea45d299eba58149ef91e7f SHA-256: b5c884b6b3648a966ba6b102eaf9e2f70a06ba6f256d5a0800d469c6ba1b4500
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=pdf+file+convert+to+image'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting a broad distribution attempt. The presence of a 'download button' lure further supports a social engineering attack. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attempt.

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=pdf+file+convert+to+image In PDF document text
    • http://files.costavistachiro.com/uploads/1/3/0/7/130740165/f9ed83427aa14d8.pdfIn PDF document text
    • http://files.terrysitz.com/uploads/1/3/0/7/130775760/3816108.pdfIn PDF document text
    • http://files.redonesmarketing.com/uploads/1/3/0/8/130814014/duvapig_pejar.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/1/0427/5834/0774/files/5948317548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4436/4710/files/lilemigizez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5963/3559/files/21232577067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/slack_emoji_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/53466512905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/xozuwirijavaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/kajib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4885/files/tejoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/kodufugenodugojavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6012/4065/files/41937545979.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_off0000793f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793F 5224 bytes
SHA-256: dcee95b1dc6cc99132eceb77438ee8b086e62605606b7494e115942dd3b0c7ae
font_01_sfnt_off00008af8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF8 10720 bytes
SHA-256: 8912de0df78e9e7fa2b16c30e27c39eeafe8e78a0faf25c950b220800dcb0177

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