Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad0e29be8c5dfc5a…

MALICIOUS

PDF

73.7 KB Created: 2021-02-02 05:12:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e5078df1fcd4b0d411c199d791e60221 SHA-1: 2ec1fef442dad7fd11a7009854befa869287cd6f SHA-256: ad0e29be8c5dfc5a219f518a23188b5a2bad2f49882ae6c87dbeaea9231b15db
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/aws?utm_term=ubiquiti+nanostation+loco+m2+datasheet PDF link annotation
    • https://cdn.sqhk.co/gulezepu/hdJjeia/ridge_retro_cruiser_board_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_60154a1316a0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374189/normal_5fcdeb8fe7d6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477658/normal_5fdbbdc8020cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371025/normal_5fcdd1e2e0016.pdfIn PDF document text
    • https://cdn.sqhk.co/kagumuzom/4cghhcX/sharpening_a_knife_with_a_wet_stone.pdfIn PDF document text
    • https://cdn.sqhk.co/susotizakaxe/gg4shjl/noxofasafobuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383912/normal_6012a59c0d548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484355/normal_5fc72a94ce512.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_5ff7ee38950f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421478/normal_5fdf238c76ade.pdfIn PDF document text
    • https://famuvotatag.weebly.com/uploads/1/3/0/8/130813835/lekisuxim.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/bededuxotulapil/zunatulitoza.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/20662156785.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/bluestack_64_bit_for_windows_8.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA1 5472 bytes
SHA-256: e63943fbb0f6c3783eb6833f7d24dd4035b1066d4a8b7d17aef4d6b2d2706152
font_01_sfnt_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 11872 bytes
SHA-256: 593559b560be73ab5a864c746beb499702c0bfdd156bbb8e7f14f941d3fcbbec