Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f2abb34235847d…

MALICIOUS

PDF

45.2 KB Created: 2020-11-08 08:39:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 3d06ea42f6822f998f42f91bbaf9d018 SHA-1: 67f2b9646033e84def8bf1b5091ae3c585c6aa94 SHA-256: e6f2abb34235847d3994f374359d772bc503349a6a6e2b34f647b3b5c6725c26
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=lookout+pass+mt+weather+forecast PDF link annotation
    • https://sebonegipuwi.weebly.com/uploads/1/3/4/1/134108682/f0d42.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/jaluzaxifubuladawa.pdfIn PDF document text
    • https://zazivepug.weebly.com/uploads/1/3/4/3/134359823/507746b5d9.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://gezovuxa.files.wordpress.com/2020/11/5950436523.pdfIn PDF document text
    • https://kotidudip.files.wordpress.com/2020/11/12235094125.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/85406035247.pdfIn PDF document text
    • https://jizobote.files.wordpress.com/2020/11/brookstone_wooden_puzzle.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/1965_dodge_charger_rt_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/ddo_epic_tr_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/1_syllable_words_that_start_with_h.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/jatek.pdfIn PDF document text
    • https://tegorijike.files.wordpress.com/2020/11/39868530588.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_off000063ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EA 5048 bytes
SHA-256: f84f3fd184ac32e38608a8eb02ef1b10e6555c479df5e9ed0c8e8f920a2d6fcf
font_01_sfnt_off00007530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7530 10844 bytes
SHA-256: 4dacbbb2404a7ac7135bf7de6d6ce91266c1df3ea6ba82fc0d8a8813738c0259
font_02_sfnt_off00009a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A48 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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