Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a0fc37db7efa4f…

MALICIOUS

PDF

56.3 KB Created: 2020-10-05 06:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 34f1033068ec4a9c34d14ae17c4a54aa SHA-1: 6d798cb9fbcdbf024d4f9ecf913fa7a30f9646a2 SHA-256: 46a0fc37db7efa4f2465ef711eea714bce8c86ab80ca981374004b762e8e00fb
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://ttraff.club/pify?keyword=lesson+9+radicals+and+conjugates In PDF document text
    • http://files.thirdstreetchurchofchrist.org/uploads/1/3/1/8/131857305/7347697.pdfIn PDF document text
    • http://tasar.netcasters.net/uploads/1/3/1/4/131453177/nigewe_lomebilizi.pdfIn PDF document text
    • https://site-1048485.mozfiles.com/files/1048485/xewifiku.pdfIn PDF document text
    • https://site-1036684.mozfiles.com/files/1036684/vivuxopudotodugoliwax.pdfIn PDF document text
    • https://site-1039314.mozfiles.com/files/1039314/dabitimuxi.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/1/0438/3444/1885/files/quoddy_head_state_park_lodging.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5104/2984/files/viwarezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8195/8045/files/96842426116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ad023c8-4b74-4051-bf25-5801bd2b1f59/runewaxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29c8731-988b-4f66-bd3b-1ffe3bb2793e/wifezigadabidogefuxutitu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/177a470b-1af4-48ea-9f20-861e9ecc9c3c/97804050091.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_off00008ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC0 5164 bytes
SHA-256: 97cab2a03a0ec6d37a4f5ab35e74c6a2e8bf375ddcd57b7253cb3bd0fcac41a2
font_01_sfnt_off0000a058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA058 11132 bytes
SHA-256: 7eef05cf14348eeab37d0f2052d1e44aa4aac0127a9ec2f09fb945ff36e222a2
font_02_sfnt_off0000c634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC634 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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