Malicious PDF — malware analysis report

Static analysis result for SHA-256 39902bf1a487dc90…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 00:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: beb21fe35fc5cedeef05cc8b0aace1c8 SHA-1: 8c16a74d3c261f1b90b9ec8688dacc6cf9297bed SHA-256: 39902bf1a487dc907cd5c0da094d0a26ea37485863c258d3e7bfc46003222220
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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=gta+5+apk+android+no+verification PDF link annotation
    • https://dipabuxirakilat.weebly.com/uploads/1/3/1/0/131071076/cc0e874f087bc01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_6021a6f4448f6.pdfIn PDF document text
    • http://muzoc.xyz/jean_pierre_garnier_malet_libros7m1k7.pdfIn PDF document text
    • https://vubilidupetox.weebly.com/uploads/1/3/0/9/130970012/18053594764.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/gigjWJg/karodagepi.pdfIn PDF document text
    • https://cdn.sqhk.co/lojenozasila/jbXhbge/pajifovezasebodevedif.pdfIn PDF document text
    • http://websporizle3.com/mitidata65mkc.pdfIn PDF document text
    • http://alisabor.design/majagubuwuxajotiruv1gcoy.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/jgvqAgh/72712569504.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474752/normal_5fe540c115fe6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382418/normal_6005819b15017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425487/normal_5fc693ee8f690.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/fu68S6o/free_printable_halloween_word_search_puzzles_for_adults.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473642/normal_60019158befa4.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/zuguvoxoki/divinity_original_sin_2_wiki_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/cartoon_photo_maker_software.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/kugapodakajobaza.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/xajipegevoduleno.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/callback_hell_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/canary_islands_holiday_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/play_store_app_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/gazufaweludovidulazelo.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/kuduladukujobu.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_off0000d90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90D 5216 bytes
SHA-256: eaa3f430d7dc67a8494619118628d125c338295b4d31354faf8c50c787464bbd
font_01_sfnt_off0000eaf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF6 11192 bytes
SHA-256: e3849b780a5367dee88c883901c9e007e5911410c4d205ce9d54294ff93ec606

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