Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b800cad959e884b…

MALICIOUS

PDF

70.9 KB Created: 2021-03-11 19:51:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02390c41bcf3b59fce66e2a8ff294037 SHA-1: dce29e97c2c33512d2749087733b51ec1e17da5c SHA-256: 8b800cad959e884b76700a1e1afdd47503ef9bc22af0808361b861190e52c529
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to domains associated with SEO spam or potentially malicious content. The ML classifier strongly indicated maliciousness. While no scripts were explicitly extracted, the PDF structure and numerous external URIs suggest an attempt to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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.
  • 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://seumenha.ru/wix?keyword=batman+unwrapped+the+court+of+owls+pdf
    • http://premiumpornclips.com/software_project_cost_estimation_templatej4ydz.pdf
    • http://tryici.xyz/what_shoes_do_you_wear_with_navy_pants26t8c.pdf
    • http://vevaxogejaz.scienceontheweb.net/96265789433.pdf
    • http://giveaway2020.info/87619245308hohn8.pdf
    • http://vazewuxu.mywebcommunity.org/yamaha_rx_a830_review.pdf
    • https://modagifamu.weebly.com/uploads/1/3/5/3/135341464/mesososesepofavuga.pdf
    • http://rm-swis-mine.com/xotijbw74z.pdf
    • https://gerugufudob.weebly.com/uploads/1/3/4/8/134869234/wuwowumopavaxum-xikakanuwi-jugawotigidej.pdf
    • https://jozinuzo.weebly.com/uploads/1/3/2/7/132712000/sagegidane.pdf
    • http://gladkoe-telo.xyz/foodsaver_v2490_problemsgcoc5.pdf
    • https://kezexawu.weebly.com/uploads/1/3/0/8/130814062/wajone.pdf
    • http://jifarobajis.sportsontheweb.net/wekofusarekoduz.pdf
    • http://dusipoweg.mywebcommunity.org/who_is_the_last_prophet_in_the_new_testament.pdf
    • http://pozijuza.scienceontheweb.net/loxugogotujufoga.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xidalagep.myartsonline.com/12489012504.pdf
    • https://uploads.strikinglycdn.com/files/4a026816-9918-4dff-a62b-f8ea367be14d/how_to_mind_control_someone_to_love_you.pdf
    • https://uploads.strikinglycdn.com/files/9915aae8-6f4b-4a6b-afa2-b716e0d520df/can_you_blog_on_wix.pdf
    • http://donijexufenu.onlinewebshop.net/saying_comparing_apples_and_oranges.pdf
    • http://bogalibamadom.myartsonline.com/do_lizards_live_alone_or_in_groups.pdf
    • https://uploads.strikinglycdn.com/files/b5ae9473-5299-4399-87d1-cc0c19fe67e5/67260711048.pdf
    • https://uploads.strikinglycdn.com/files/da78488b-9074-4e84-b51f-398126a7f761/xijofobiruzefotorela.pdf
    • https://uploads.strikinglycdn.com/files/8efcef37-8133-4208-9267-e65d7e503d28/who_dies_in_the_trials_of_apollo_book_4.pdf
    • https://uploads.strikinglycdn.com/files/4401d41e-bdbe-4aeb-98a4-0f3840a98b12/ludelodizin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d53e.bin
849acd975c22c7bf20324989dabb045b57a74d5780624e62478089cb84aaf02b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD53E 5536 bytes
font_01_sfnt_off0000e7f6.bin
26eadddd0c044c190013eebcd2791c13e8af5454f97672a0408b4c17fa509b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F6 11136 bytes

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