Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc086aa4d34b0e16…

MALICIOUS

PDF

82.2 KB Created: 2021-02-25 22:36:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: edc209810235d16bb1738d88134bf4fd SHA-1: 457adff967c43d6ff20d4816105d9020f443c88b SHA-256: cc086aa4d34b0e16da70b7f35cbcdcc90b738eed34cfd214b3685093e1eb327d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=dream+car+racing+unblocked+google+sites PDF link annotation
    • https://navitadewota.weebly.com/uploads/1/3/4/0/134017874/d12b2a8.pdfIn PDF document text
    • http://reduslim-italia.website/164679940939e9v7.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/85010473398.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/28523178264.pdfIn PDF document text
    • http://7gusevshop.space/53125104505uohs0.pdfIn PDF document text
    • https://diwowure.weebly.com/uploads/1/3/4/5/134592565/233acbcf5dd.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/gezetega/yesterday_tamil_news_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/xafiwidizudogevijetoj.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/55750862851.pdfIn PDF document text
    • http://guwitus.epizy.com/69081678977.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/white_blank_page_song.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/72174164121.pdfIn PDF document text
    • http://makuwuwamev.rf.gd/pibobox.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/tipizopovobafux.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/dell_precision_t5500_price_in_pakistan.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_off0001043f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1043F 5464 bytes
SHA-256: 7004d1cdcad2e9bd33958bb8e0937f6db4e1cc228090523fcabb33673679e4f1
font_01_sfnt_off000116ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BA 10796 bytes
SHA-256: b287fb5c530cfd6fc1ec97c5ef18ffb91477046c3ad79fb275e7c3ea9575c6df