Malicious PDF — malware analysis report

Static analysis result for SHA-256 057a912ef7fc1d2e…

MALICIOUS

PDF

77.3 KB Created: 2021-02-28 16:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 523369fdecbf54d0461bbcb638201b12 SHA-1: d68aab80d8413a0f36fe55ca1444f0c65bbd8b12 SHA-256: 057a912ef7fc1d2eb73134652f83cd583144cc267f68bda9af599f6bff0791f3
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://seumenha.ru/award?keyword=rom+lg+g2+mini+d625+lollipop PDF link annotation
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/kojolavixo-bemusemineboli.pdfIn PDF document text
    • http://kowojolajamuv.getenjoyment.net/the_hunger_games_2013_movie_download_in_hindi_720p.pdfIn PDF document text
    • https://lewezuwarekizes.weebly.com/uploads/1/3/4/0/134040914/59a7e261f.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/how_to_install_self_adhesive_vinyl_wallpaper.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/tonerixuvamus.pdfIn PDF document text
    • https://ralirepiputup.weebly.com/uploads/1/3/4/8/134852471/nujopate_noguwep_paniken_turebap.pdfIn PDF document text
    • http://rikeropovi.22web.org/how_do_i_reset_my_roomba_890.pdfIn PDF document text
    • http://numulul.mygamesonline.org/40509056132.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/rabenabuboga.pdfIn PDF document text
    • http://moxegelubopidi.sportsontheweb.net/78438638962.pdfIn PDF document text
    • https://tirepululavapiw.weebly.com/uploads/1/3/4/5/134576363/1fe235613399.pdfIn PDF document text
    • http://xitabijasava.getenjoyment.net/48391534112.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/wupuxus/58453604704.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/mavepabaf.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/fejinugizaraweb.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/chauvet_intimidator_155_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/charlie_chaplin_movie_city_lights_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/77054261483.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_off0000f119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF119 5212 bytes
SHA-256: 504f736c1920d2f732f39111e727f0557dd50971957bf96f262f0e3530aa33ab
font_01_sfnt_off000102d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D2 11248 bytes
SHA-256: 1cfcf5afd0eb2ac82ae4f27a0ba57fa94694084c0fe85dfc9115b04dd35996c1

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