Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbfe4891db82e374…

MALICIOUS

PDF

62.8 KB Created: 2021-02-22 04:54:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0cffb55dfdfc32d1eb091637aca6175d SHA-1: 8395d9bb76f5d92c92326d2d21cc688d2522864b SHA-256: dbfe4891db82e374b0afe41d24a50caa319da2e7d587322e971b1d94c2a23cf3
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://jottigo.ru/wix?keyword=brinkmann+q+beam+max+million+iii+manual PDF link annotation
    • https://cdn.sqhk.co/totimujid/dahaO5L/dukowaki.pdfIn PDF document text
    • https://cdn.sqhk.co/vafegijateno/cjcRiiG/jakedasapetisomedilebow.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/jcrDhhZ/play_bubble_shooter_offline.pdfIn PDF document text
    • http://temilops.xyz/jojozixonanevi6408z.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/jibijhc/13892635808.pdfIn PDF document text
    • https://tunupufimudodo.weebly.com/uploads/1/3/4/3/134324073/mugozazubefifu.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/arMgfDD/kittens_mini_boxing_ring.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/jjgghiH/foratukizonadifadakanejo.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/shgjd9B/bloons_td_5_free_download_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464732/normal_5fe6e1b87e267.pdfIn PDF document text
    • https://cdn.sqhk.co/kofosenolo/2Eiihgd/pixel_car_racer_apk_mod_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/hjRDlGR/12917113292.pdfIn PDF document text
    • http://olymptrade.buzz/greenlee_dm-20_troubleshootingu0zor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://figofubinodafe.rf.gd/english_grammar_rules.pdfIn PDF document text
    • http://mogorir.epizy.com/gulexirirologupufuvike.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_off0000bb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB4F 5100 bytes
SHA-256: d0d4f195739bf2f6ffc99fb1e37494607a96424bc65600c77ad6cdb520f6d7dc
font_01_sfnt_off0000cc95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC95 9936 bytes
SHA-256: b65dcee200cfc5328e349ca661b1127d4194d10b54484fb4db91b955d6285765