Malicious PDF — malware analysis report

Static analysis result for SHA-256 42b37d6fb9150989…

MALICIOUS

PDF

35.2 KB Created: 2020-10-01 00:43:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: fc35d47f2fdc237a557fb4a903be1ea0 SHA-1: 2513cf63ce5048950e0ce9215e05cda513cf88a8 SHA-256: 42b37d6fb9150989db1837d8b351a90e1b5e7bac6436001c0d36d5fa653b4918
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=advanced+calculus+solved+problems+pdf In PDF document text
    • http://files.lbrpost.com/uploads/1/3/2/3/132303010/vuvilupibulajed.pdfIn PDF document text
    • http://files.3fishproductions.com/uploads/1/3/1/1/131163635/4182986.pdfIn PDF document text
    • http://files.radi-you.com/uploads/1/3/2/6/132681671/6645265.pdfIn PDF document text
    • http://vivixig.saturnrinanewburnmedportfolio.com/uploads/1/3/1/4/131453151/bazefafazomawelepud.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6db8f4-59c6-4bd5-bec2-b9bd4faa1eae/madekezujazazeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0c80b00-d7d8-41c5-9ba3-c8c1ed4f25b5/loxid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3e07d78-9bd2-4f11-b71a-ac77ff847a6a/44453581231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d627608e-2da4-47df-9b28-776998d57c5a/29314778149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9beed2a-8b99-4f33-b2de-bf16d8a2b3bc/33700551209.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9328ef3-e3a1-4188-8c13-1f5d9e3f58b7/varetulune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec2bc1f8-43ea-4031-8acc-05546e130963/bidolikiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5349/0071/files/lowercase_a_printable_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4032/5282/files/married_life_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4642/7034/files/pegegegijabafekivedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8378/4352/files/abyssinia_law_legal_forms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1007/6322/files/amityville_o_despertar_hd.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 8

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_off00004bfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BFB 5488 bytes
SHA-256: 49f08447a3b5487c40c8d00c4ab2cd636e68dfb44e4ccfc1b5a2f6d25642eb6f
font_01_sfnt_off00005e90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E90 9800 bytes
SHA-256: e8fa4d03853845188859415746c59d732da422951cdc82d440a34b77eea7a69c

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