Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c99417668148a0c…

MALICIOUS

PDF

38.4 KB Created: 2020-08-12 03:02:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a39c8e1b3cabfddf45f4d01e2e79598 SHA-1: 63f6e51ea65da0a8541ea74b18986e6d85c63b15 SHA-256: 7c99417668148a0c3bff46094dad0084e5f860dc906308fe6e336a164ef274f0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The heuristic firings indicate this PDF is a link farm designed to redirect users to potentially harmful content, likely a phishing or scam lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=journal+of+west+african+languages+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=journal+of+west+african+languages+pdf In PDF document text
    • http://files.thepantry8020.co.uk/uploads/1/3/1/4/131437363/63b8eabfc.pdfIn PDF document text
    • http://jetewu.davidcareyimages.com/uploads/1/3/0/7/130738632/gipusimujanosolidora.pdfIn PDF document text
    • http://kesiwa.coolharmonies.com/uploads/1/3/1/1/131164250/e7e5d6cfeafb8.pdfIn PDF document text
    • http://files.corkscreworders.com/uploads/1/3/1/4/131437157/6916053.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/1/0439/3772/6622/files/listening_english_conversation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/43846105183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6630/files/74535961377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0471/files/behaviorist_theory_of_personality.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8462/8633/files/11793295259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0359/9272/files/nobivatena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/6025473771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/73727203909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/copper_ore_stardew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/how_to_get_photoshop_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/55414894591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/21110503925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/tiwawomusago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/fupeziwuxetojibixigagi.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 2

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_off0000579b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x579B 5404 bytes
SHA-256: db4fef822861920b155eeb83393a92fdf7ab932b17886d1e33897ee5bea6dc80
font_01_sfnt_off00006a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A23 9956 bytes
SHA-256: af1a9b0f8bbdd632b9c94ea472f9291f724471a946df8c488a64861b0f3f4c71

Open this report in the interactive analyzer, or submit your own file for analysis.