Malicious PDF — malware analysis report

Static analysis result for SHA-256 977dfc7bcc0fa6e8…

MALICIOUS

PDF

51.8 KB Created: 2020-09-07 14:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 218a433d1795657af4681a14cfe1c026 SHA-1: afb0c8d56133b8582d6e8a6f6daec505a90d8196 SHA-256: 977dfc7bcc0fa6e8b1f3b3caed80f1a4b4dee230fc15f8a33672ca2743a7a62c
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, pointing to 'ttraff.me'. It also exhibits characteristics of a PDF link farm, with numerous external links. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, suggesting a lure. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports a malicious workflow aimed at tricking the user into clicking a link.

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.me/wix?keyword=free+website+templates+for+education+consultants In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static.usrfiles.com/ugd/e6092c_f105d759818b40ed93bc3037738491fc.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/575363_2e49d3fe891e4bae868b517a994b5cb9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9421c8_3bd23ac96f964916b8b33925d7df58df.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/97aff7_1723ec152c364f689d37c6c58cc8168f.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/oxygen_not_included_power_grid_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9243/0248/files/temaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6910/2485/files/android_button_text_bold_xml.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/35ddae_df8e9a92b5124c49afe3301259f2a4ae.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/55f640_148d2977c6b94b71853c6f21439457ef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b77b08_a2be8455ea8e4a63ad4cc9c6462a8c54.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3615fb_294bf0c161e44583aed443684c4fdea6.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C6 5372 bytes
SHA-256: fd575111664342cfa0666882a52c74cfcbe9a5aca2689c92a6167c738c556749
font_01_sfnt_off000085ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EC 2268 bytes
SHA-256: 72a3fe65f0a21df30f240897224061cfa351088b80a4eb601fb5defb198ec993
font_02_sfnt_off00008ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFE 10432 bytes
SHA-256: 11435339b346c7baf1749232a2544c056a339e38e3958450ed24ee2fbaa575d2
font_03_sfnt_off0000b36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB36C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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