Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf3f63ccf9c2b0f…

MALICIOUS

PDF

70.4 KB Created: 2020-08-19 01:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d06d4aa706840ca9e65a2051d10698bc SHA-1: 4a7273b989719facd5d064308acfee4e7df7e2a2 SHA-256: 5cf3f63ccf9c2b0f22769a0a98a1469163e33d6bdd346af431cd24aaae9a6e11
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics indicate a lure for a 'soil analysis report' which is likely a phishing or scam attempt. The ML classifier strongly supports the malicious verdict.

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=informe+de+calicatas+de+suelos+pdf In PDF document text
    • http://files.carolheilman.com/uploads/1/3/2/8/132815015/641222.pdfIn PDF document text
    • http://numuxi.miratorres.com/uploads/1/3/1/3/131398591/powurodijogaka_korexudunomode_lixafiwemovaki_pidusuliwub.pdfIn PDF document text
    • http://sezagev.caninecharacter.com/uploads/1/3/0/7/130776791/1546eed.pdfIn PDF document text
    • http://pagivepa.laplandranch.com/uploads/1/3/0/9/130969439/fiwupaluwijeve.pdfIn PDF document text
    • http://lunotufes.customfitc.com/uploads/1/3/0/8/130814017/2346431.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/1/0433/0687/7080/files/30899714004.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/bosezajimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9168/8610/files/muzilovofoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6980/4439/files/descriptive_data_analysis_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7350/files/port_authority_bus_terminal_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5446/4165/files/adobe_converter_free_download_for_windows_8._1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9170/5500/files/71391324548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6216/files/53952729776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1420/9186/files/ziwili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/50700909321.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_off0000d3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A2 5236 bytes
SHA-256: 33a6113a9b884ae9e18f7eb41f317e2feb810417202c8aa6ae782cf75289e38c
font_01_sfnt_off0000e54b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54B 11824 bytes
SHA-256: 9891cbbbd5aad37f2264dffd6316184b29d637586f437a7de9b5a7d6fba18c7b

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