Malicious PDF — malware analysis report

Static analysis result for SHA-256 24c0976e53b85d63…

MALICIOUS

PDF

40.1 KB Created: 2020-08-06 12:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe9155d5b4604f88210d0c59ed9b1e38 SHA-1: 5f9d2202ed69ca579e6d16a14378bbe2f2f37274 SHA-256: 24c0976e53b85d63ad8d661389a7d76143a1a915efbaeeefd67b7b88e3531868
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 `https://ttraff.ru/pify?keyword=biology+past+questions+and+answers+pdf`. This URL is presented within the document body, disguised as a link to educational material. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on `cdn.shopify.com`. The presence of a 'download button' heuristic further suggests a lure-based attack. The primary intent appears to be directing users to malicious infrastructure via a deceptive 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.ru/pify?keyword=biology+past+questions+and+answers+pdf In PDF document text
    • http://files.genevabeautyusa.com/uploads/1/3/2/6/132695531/4158447.pdfIn PDF document text
    • http://files.willdeandesigns.com/uploads/1/3/1/4/131437421/6096577.pdfIn PDF document text
    • http://files.thirdgradewithmrslilleboe.com/uploads/1/3/0/7/130776728/kutusenapelulagaxo.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/1/0433/4210/2679/files/anti_hijacking_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/gapojirakuvovinog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/20748810132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9571/files/shackleton_endurance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/64083020891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0852/3416/files/74866666849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3942/2624/files/kotujegejususopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3529/5905/files/16000_woodworking_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9171/3443/files/epsxe_best_sound_plugin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.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_off00005b8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8B 5576 bytes
SHA-256: 6fe45de2b012523b2fb8f5af80e088e0b3651d183ae64c7592b262ffd6c421bb
font_01_sfnt_off00006eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAC 11216 bytes
SHA-256: e25acebb9f5c6fa2b92ab276612529fb42e9f86774b92a45728268d18d9c2bb9

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