Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede45852601b487c…

MALICIOUS

PDF

73.7 KB Created: 2021-03-02 21:43:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 240ac8dd43fc221590a7ab3d6a5319ef SHA-1: 4c56cd17c68d8bae768ee3ff0f786441e5681287 SHA-256: ede45852601b487c6918430ca0768a49bce941872a942849c56aa576d0617d41
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/award?keyword=the+prince+2019+full+movie+free PDF link annotation
    • http://medgaj.com/how_to_get_snapchat_bff_back0a7xi.pdfIn PDF document text
    • http://joblanc.xyz/driver_sound_windows_10xut3n.pdfIn PDF document text
    • http://uptodate.site/lifetime_health_textbook_chapter_6_review_answersxmot6.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/4531150.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/lerezazo/jagipitonixu.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/sogexabel.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/jetokaforosuge.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/sapiwosepizejuwefuvoseva.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/fijusunudev.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/kumakonopikexelowejezewak.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/49036021060.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/counting_1_to_20_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/missguided_bandage_midi_dress.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/aladdin_trailer_2.pdfIn PDF document text
    • http://xewaxal.epizy.com/nikelizikateke.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_off0000e4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E2 5360 bytes
SHA-256: 62adaf1fd4303df32f69717297cb2b32102dc7845c9a4278bba2028cc666d0e2
font_01_sfnt_off0000f70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 10212 bytes
SHA-256: 46072d62c69553e04fd430c0e63c23038aa6f0130ea6263d509de008f270d28e