Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b1c332f3038246…

MALICIOUS

PDF

41.8 KB Created: 2020-10-03 13:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 519f26294fa7dc4691d42c2aceb91f4f SHA-1: 56e42f78a9237f3b787230a2c127f00078405382 SHA-256: 46b1c332f3038246d2d43d0692f231eb8a0471b0317c6630cba18c68cde083e7
202 Risk Score

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://gettraff.ru/strik?keyword=don+bradman+cricket+apk+obb In PDF document text
    • http://files.olympusmovement.com/uploads/1/3/0/8/130814763/15ac972e7.pdfIn PDF document text
    • http://files.mcveyoutdoors.com/uploads/1/3/0/8/130873715/75b94853ea016.pdfIn PDF document text
    • http://files.cpsplantscapes.com/uploads/1/3/1/4/131437530/kikozapesew-gusasuf-wofepisu.pdfIn PDF document text
    • https://site-1036676.mozfiles.com/files/1036676/12016458656.pdfIn PDF document text
    • https://site-1039783.mozfiles.com/files/1039783/50253815294.pdfIn PDF document text
    • https://site-1036926.mozfiles.com/files/1036926/gokawotovipa.pdfIn PDF document text
    • https://site-1038309.mozfiles.com/files/1038309/92113784834.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4073/3341/files/9679048207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1125/0075/files/trek_incite_9i_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8374/files/33728769813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/romeo_and_juliet_plot_diagram_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5025/3984/files/87003964117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07e5cc8b-78f2-4dd8-83a1-dd70b02cc73a/sadexubenufonajuvuzuxafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a8470ef-882f-433f-b92c-1d8cbbe18a9f/96955804152.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58C7 5000 bytes
SHA-256: 1abeca3d9228472317329b41d09768c92715c05b79356a9068da07d9ca65ea2d
font_01_sfnt_off000069a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A3 10148 bytes
SHA-256: 7b8382ae1695bca7ea0573c3bc91854fbe230af1a4bb9a80c4f848a5ccaec42d
font_02_sfnt_off00008c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C69 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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