Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd65227d75d0073…

MALICIOUS

PDF

38.9 KB Created: 2020-08-19 13:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d01b10de95f0b9648880297a77f859f SHA-1: 542c8157f4f5e6c3832728462ab233988bcf5de1 SHA-256: fbd65227d75d0073c59db502ff9000fc57918297b7dc80f2acab94ed713021b1
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with a redirector. The document body, though heavily obfuscated, contains text related to "color by number pdf free" and the malicious URL itself, suggesting a lure to a scam or phishing page. The presence of numerous external PDF links, many pointing to Shopify, further indicates a link farm or SEO manipulation tactic to distribute malicious 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.cc/pify?keyword=color+by+number+pdf+free In PDF document text
    • http://files.ardsleypta.org/uploads/1/3/2/6/132695915/5a2a7fec33eb8.pdfIn PDF document text
    • http://zurezef.semanathompson.com/uploads/1/3/2/3/132303195/2cab2.pdfIn PDF document text
    • http://files.nextbuildingforum.com/uploads/1/3/0/8/130813934/a76ef47c7bb.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/1/0429/6366/5062/files/que_es_el_analisis_vertical.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4140/6631/files/53996178743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96280370261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1577/2059/files/44712028641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0832/6812/files/monixobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/reduce_file_size_mac_free_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5264/6050/files/buxokabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/best_app_to_instagram_videos_iphone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6384/4767/files/operational_amplifier_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0157/6615/files/sheet_music_say_anything.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5949/5590/files/walegawolobavujat.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 3

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_off00005530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5530 4944 bytes
SHA-256: 15725ba8de44aab0b456fc9f6ec6c206c222ee2f3d418a3b426869c4d063a2e9
font_01_sfnt_off000065e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E7 13024 bytes
SHA-256: 3293fd3513f8f8b6d5107078ef1ab35e5a66d028f938d8667dccee639215a056

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