Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffea6303d3a391d4…

MALICIOUS

PDF

62.2 KB Created: 2021-02-03 11:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1e78c287a7076ac3350d863aa70e79d3 SHA-1: f7d321ffb5d67d7bba5a6957b88dd1b8b423bdab SHA-256: ffea6303d3a391d4f90847d81e167efc0a3df7295d5bf5632e52c8ab1ccaa290
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wb?keyword=a%20kwela%20for%20caitlin%20sheet%20music PDF link annotation
    • http://4gusevshop.website/mchat_twitch_appbsp6x.pdfIn PDF document text
    • http://com-login8.xyz/798477084617defm.pdfIn PDF document text
    • http://vabuzunaseridal.iblogger.org/secondary_stroke_prevention_guidelines_statin.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/b7Y3Kjb/19649644596.pdfIn PDF document text
    • http://nekretnine.site/consumer_capitalism_definition_economics84daf.pdfIn PDF document text
    • http://frasqen.online/70496065970gr65p.pdfIn PDF document text
    • http://revershjtb.site/bitcoin_for_dummies_freeyu5o7.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/kigavanus/24683515694.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/lowercase_and_uppercase_letters_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/16300105993.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/ukulele_tabs.pdfIn PDF document text
    • http://dujepuxa.rf.gd/dsssb_prt_1_18_answer_key_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/spreadsheet_to_google_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/33262587616.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/semirufemabetif.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_off0000b56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB56D 5268 bytes
SHA-256: 971ede485c48ebdbf91a415ccc91cb2824637a7f505d345e31065e63b2ca67fc
font_01_sfnt_off0000c741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC741 10812 bytes
SHA-256: 8c422366c64ef0f1153401cada9b4f1277e79a2ca8699f1f2d8c87a9b07a70c2