Malicious PDF — malware analysis report

Static analysis result for SHA-256 4912b2a2dc5e731b…

MALICIOUS

PDF

41.5 KB Created: 2020-08-25 10:09:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0df8bf814550e60b028a7ff1114903de SHA-1: f117d745323311c2ccfc080df235131a9c71db89 SHA-256: 4912b2a2dc5e731bb8fdaf051892208213f01f8941a5d02e9b7746ba20f51374
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=video+editing+software+free++latest+version', is designed to lure users by impersonating a software download. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious destination. No scripts were extracted from this sample.

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.cc/pify?keyword=video+editing+software+free++latest+version In PDF document text
    • http://vegeza.grandchapterram.org/uploads/1/3/0/9/130969352/2864062.pdfIn PDF document text
    • http://tinaf.normanhartleybooks.com/uploads/1/3/1/3/131380429/fegovotenujapo.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/1/0433/4092/3048/files/60799375152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3636/7265/files/android_button_animation_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6074/7688/files/aarti_sangrah_file_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/nebogajod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/carbon_capture_technology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3248/5793/files/utf-_8_encoding.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3345/9879/files/darkness_rises_apk_data_revdl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6953/7432/files/93247202920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5268/6742/files/46343301762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7011/8302/files/ignou_assignment_front_page_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8945/3217/files/black_and_white_patent_leather_platform_shoes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F3 5192 bytes
SHA-256: cdae4b89166286b3f703dac80ab89f6e538b663ec093aec96a840e51c093dca4
font_01_sfnt_off000076cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CB 10092 bytes
SHA-256: 9a47b32adb03e701d10074661ea0ad1cf1c06040f47f5c445f7475d9a7b380cf

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