Malicious PDF — malware analysis report

Static analysis result for SHA-256 4292bbcdf12128e7…

MALICIOUS

PDF

64.4 KB Created: 2021-02-19 20:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a07eb534f3ddd3beb2be1a4c34673e4d SHA-1: 34ea4aeadc288abd7d82ab2c33e3d4cf03f5f8ef SHA-256: 4292bbcdf12128e7f4f1f546f5d04c46a94c18d9b6d528bbd16589091b828cb4
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://bologen.ru/wix?keyword=song+of+storms+ocarina+tabs+10+hole PDF link annotation
    • https://cdn.sqhk.co/junizafuzep/R3QeRO0/best_photo_video_maker_free_app.pdfIn PDF document text
    • http://canlisohbetim.net/syngenta_corn_planting_guidecks8j.pdfIn PDF document text
    • https://bakadowo.weebly.com/uploads/1/3/1/3/131380427/winuvadamovow-jafowa-kefiva.pdfIn PDF document text
    • http://mmmmmme.space/76589004227wmfxs.pdfIn PDF document text
    • http://ecosbor.net/63492865845awcg1.pdfIn PDF document text
    • http://mon-cmbretagne.com/gozinewetoduwabavamajok81cqe.pdfIn PDF document text
    • https://dogenirifalalu.weebly.com/uploads/1/3/0/7/130775866/8feab63f62.pdfIn PDF document text
    • https://sosuxivi.weebly.com/uploads/1/3/6/0/136056733/xurikirikafise.pdfIn PDF document text
    • http://yarrebitteh.online/can_you_use_oracal_651_as_a_stencilysg72.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/sheet_sets_egyptian_cotton28eu3.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/bovenotojitowe/patch_aurora_3d_animation_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/lisinejepotaxezo.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/boxuguvenafatitapetobelup.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/siduxitexodaz.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/dumuduwejudinuba.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/ladidopulovubofag.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_off0000bfbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFBB 5732 bytes
SHA-256: e4a935ea725364ea53170fa5db5a9aa7fc11376be9fdb60efc310ca1ef7dbacc
font_01_sfnt_off0000d326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD326 9804 bytes
SHA-256: 15d2a05493fd3913773d9469cdaa4f8f3046516978fd0ff9140a609138a38fb1