Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c692f6b737355ac…

MALICIOUS

PDF

64.8 KB Created: 2020-08-17 01:15:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 915eda5ddf117f999049257eb7441add SHA-1: 3108d7f4e39e7584babf147c62b7b13df9933659 SHA-256: 9c692f6b737355ac822c5a381aab7524d87ae3d42c37715de675935e11c51570
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm and a malicious redirector link, indicating a social engineering attempt. The document body and heuristics suggest a lure to install a browser update or extension, which is a common tactic for advance-fee scams or malware delivery. The primary malicious URL identified is https://ttraff.cc/pify?keyword=mozilla+firefox+49.+0+64+bit.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=mozilla+firefox+49.+0+64+bit In PDF document text
    • http://kidusowiz.rammothdm.org/uploads/1/3/1/4/131453858/caa4a5d4510519c.pdfIn PDF document text
    • http://xidap.hamptonlinks.org/uploads/1/3/1/3/131383407/9567850.pdfIn 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://cdn.shopify.com/s/files/1/0433/1143/1838/files/academic_writing_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9415/4146/files/daily_attendance_register_format_in_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/vokugobedinavituzelesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/miconia_albicans_canela_de_velho.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/bijurimevuvivumopikokil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/chess_openings_database_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/lurelanen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/50755673671.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB171 5100 bytes
SHA-256: 44f096184696d950d38c24a9069533606abd06cd4001460afdbcdc03c0a21406
font_01_sfnt_off0000c2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E7 11248 bytes
SHA-256: 9ee974627fa0ce9bcd82946161c1628375d6bf6186a54507f8abc6d9dfc298aa
font_02_sfnt_off0000e869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE869 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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