Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4088d70759b5bbf…

MALICIOUS

PDF

45.1 KB Created: 2020-08-18 22:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5168655db96988ede116269e6339524c SHA-1: e990a56576b90a3273d0ddd672d7af5954155c00 SHA-256: c4088d70759b5bbf12d1106978e29dccde7a68daf5e39ffbbd4b81d8f84b87b5
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO manipulation or to redirect users to malicious sites. One of the extracted URLs, 'https://ttraff.ru/pify?keyword=grim+fandango+remastered+trophy+guide+and+roadmap', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to blend malicious links with seemingly benign content.

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=grim+fandango+remastered+trophy+guide+and+roadmap In PDF document text
    • http://files.chhspiratesband.org/uploads/1/3/1/4/131437584/gesokos.pdfIn PDF document text
    • http://zofukuje.portlandumc.org/uploads/1/3/1/3/131380181/tineked.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/1/0434/4673/0904/files/california_state_university.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/50296171100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8030/2238/files/roman_catholic_catechism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3603/2674/files/21013436158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/52863029898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/56991135259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7656/6684/files/wofebovotifozobamulekaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8168/6439/files/59209220588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7278/2489/files/19863676395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/initialize_2d_array_java.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_off000070e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70E3 5556 bytes
SHA-256: b38d938e8f2c0a353ab735273013204acc4a9365789b5b804c506f0cacc81cfc
font_01_sfnt_off000083a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A5 10420 bytes
SHA-256: c817cef7e2834a135cfbe313f6068f8628c1a515bccfa709924a304355f178c7

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