Malicious PDF — malware analysis report

Static analysis result for SHA-256 83932bf6814c27a3…

MALICIOUS

PDF

72.3 KB Created: 2021-03-04 21:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ac1fa27e45364fd26ad13dd1e57ede72 SHA-1: 6866b89e183fdf467539929ff8aa2e4ac42a9889 SHA-256: 83932bf6814c27a3c72417d46de194f7f2160135a6f32aea165e4e074ce9aab0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/wix?keyword=btd5+unblocked+games+for+peasants PDF link annotation
    • http://xefawojuj.mygamesonline.org/lights_out_tickets_2020_david_spade.pdfIn PDF document text
    • https://gegiritofizupog.weebly.com/uploads/1/3/4/6/134644009/68e60bd.pdfIn PDF document text
    • http://shoop-fm.ru/pomijezivf6ocr.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/the_promise_of_a_pencil_download.pdfIn PDF document text
    • http://akfb.online/how_to_reprogram_a_genie_wireless_keypadhfz0l.pdfIn PDF document text
    • http://citimart.online/26188974091trcd8.pdfIn PDF document text
    • http://mklhhhh.space/16881447309kl03a.pdfIn PDF document text
    • http://malespw.xyz/the_lost_ways_book_hardcover1vjx6.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/84384451925.pdfIn PDF document text
    • http://xutefizil.getenjoyment.net/wavojojuzujevogusu.pdfIn PDF document text
    • http://kinoxca.xyz/bible_tagalog_file57jqn.pdfIn PDF document text
    • https://rifewageza.weebly.com/uploads/1/3/5/3/135349229/401ae58b029.pdfIn PDF document text
    • http://xitawefavam.medianewsonline.com/84127151403.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/kujumokexum.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/savaxoxijagaw.pdfIn PDF document text
    • https://409b2d23-5c1d-402e-97df-26c0da9299b0.filesusr.com/ugd/2e3d42_68cadb42ca5549a59ba68dbe1142ff18.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/binary_number_system_conversion.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/systematic_literature_review_guide.pdfIn PDF document text
    • https://e924225a-aa46-4bfc-8e56-7341551e1833.filesusr.com/ugd/54dfea_4f1190355c5a49cabb0e1ac3e4c7346b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/83631673386.pdfIn PDF document text
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_791b331548334d489674c784fddd15cc.pdf?index=trueIn PDF document text
    • https://ddb0fe67-a09a-413d-b59a-c21b1dde3186.filesusr.com/ugd/3f0e57_c46dcd5f941b42e399a2d3752bf29669.pdf?index=trueIn PDF document text
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_83ae7709783d4635a9109cdf9a0e3db0.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDC6 5852 bytes
SHA-256: c0ca21c121c8f82a051ae782940d4e81a9b831f328625d42eef5161c28eaff64
font_01_sfnt_off0000f1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A0 9888 bytes
SHA-256: 1c5e2b2a3c8c5a56fb2e83b58f56f68c8e3a3cda044c19638f638de29597092b

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