Malicious PDF — malware analysis report

Static analysis result for SHA-256 4edc2dbf2fdc19d1…

MALICIOUS

PDF

72.9 KB Created: 2021-02-17 20:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a0ab26c6ce93dfaff4f8f2008ef92cfb SHA-1: 2fba759fa50629a2ddbd5aa34c56d1b3289bdba9 SHA-256: 4edc2dbf2fdc19d17872cab23cdc52bc1674cc231c8cdfdeae8dac02bc87576f
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=casablanca+ceiling+fan+manual PDF link annotation
    • https://cdn.sqhk.co/nupepewomaxu/u3ibhf4/soccer_battle_royale_download_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/7icifFv/rezozarovatod.pdfIn PDF document text
    • https://cdn.sqhk.co/golemejexeno/jdjcC3O/head_soccer_hacked_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/lokuwanij/VWmhchj/nasa_spacex_crew_dragon_live_stream.pdfIn PDF document text
    • https://cdn.sqhk.co/faxixuwako/myiijiH/8802509361.pdfIn PDF document text
    • https://fulopovesaj.weebly.com/uploads/1/3/0/7/130740112/ginesab.pdfIn PDF document text
    • https://redulexaxoxega.weebly.com/uploads/1/3/0/8/130874010/sewobiwen.pdfIn PDF document text
    • https://gofadoden.weebly.com/uploads/1/3/4/6/134615513/dopibojijar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457279/normal_5fc86db420de0.pdfIn PDF document text
    • https://cdn.sqhk.co/poladejug/hb2rkhb/steam_cleaner_handheld_lowes.pdfIn PDF document text
    • https://cdn.sqhk.co/junizafuzep/R35G7YO/72137081486.pdfIn PDF document text
    • https://cdn.sqhk.co/jerizukop/ibRNihn/costume_jewelry_appraisal_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pujazojiwixi/gjRY1XF/1498153933.pdfIn PDF document text
    • https://cdn.sqhk.co/gawukale/idgfCib/26285515595.pdfIn PDF document text
    • https://cdn.sqhk.co/xaripisi/Rhhjehj/zufajadumijurodimazuzuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5fd70eeb2263a.pdfIn PDF document text
    • https://cdn.sqhk.co/zaniridut/fMK6hcT/37469585533.pdfIn PDF document text
    • https://pizotiwedif.weebly.com/uploads/1/3/4/8/134868845/bad853a69a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD410 4960 bytes
SHA-256: 24e7fe9aba50afa4b7ef7630c0212573390281b37143137f7b44be1194da5509
font_01_sfnt_off0000e4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DA 10336 bytes
SHA-256: 81f2d1a58d8124e3bd5cd2d98eb9f60ced9e562f6b3052c5a653b6043f65e5cd
font_02_sfnt_off00010835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10835 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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