Malicious PDF — malware analysis report

Static analysis result for SHA-256 c68e678abd4448aa…

MALICIOUS

PDF

35.3 KB Created: 2020-08-03 16:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b7cee363190e833a3d63da6262d97b3 SHA-1: f21a9e0cadf159bcb12725525c2e44dd3c447e14 SHA-256: c68e678abd4448aa821372e77d93962d982c2859d57d9d9a8b486d5184516585
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious sites. The primary redirector link, https://ttraff.ru/pify?keyword=civic+education+pdf+zambia, is flagged as malicious. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of links and the malicious redirector suggest a drive-by download or phishing attempt.

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=civic+education+pdf+zambia In PDF document text
    • http://files.one-girls-empire.com/uploads/1/3/0/7/130775537/tudigimiluwumego.pdfIn PDF document text
    • http://files.rebelgearofficial.com/uploads/1/3/0/7/130739532/depijavopitisiz_xoxodefitudem.pdfIn PDF document text
    • http://files.artleapadventures.com/uploads/1/3/0/7/130775649/9793677.pdfIn PDF document text
    • http://files.autolandcars.ca/uploads/1/3/0/9/130969399/28f999941e.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/1/0433/2158/9913/files/kejutazotebipazasulaxiwiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruketisoren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/24168692182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/nejaje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3563/files/california_dmv_release_of_liability.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/kodovisofuzexanesabenawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9444/2133/files/bovawarosudinawokogamal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/jetexojubanibulasejejag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8369/4247/files/ridulivexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5174/0310/files/how_to_code_a_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/maketus.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_off00004cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBC 5152 bytes
SHA-256: b16b9d6dc7e5e1d9aa1a41848c868bf1f17a1ac7e7f841f6bee71e94d7afbf3f
font_01_sfnt_off00005e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 9936 bytes
SHA-256: cba83b059d233f95564022c0914b1b0cfc44d648f359f1d256a65e6cacb6dbe0

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