Malicious PDF — malware analysis report

Static analysis result for SHA-256 59aef459eb9650dc…

MALICIOUS

PDF

74.5 KB Created: 2021-02-15 01:50:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0e2b460e3482cb99615008e031a30a42 SHA-1: 6cb59cd3f0103e8e3e8a0bccba159b6fa24cb08d SHA-256: 59aef459eb9650dc73b8b2c1b97f73a58b7ba51551b9f4664fd724209dcae2aa
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=selkirk+metalbestos+6t-pck In PDF document text
    • http://mrshadow.net/23552993153c5dsj.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/jjjim5J/english_song_lyrics_for_instagram_bio.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/W2fJ6ox/russia_victory_day_parade_2020_live.pdfIn PDF document text
    • https://cdn.sqhk.co/tinulafi/ghaggib/skyblock_seed_for_minecraft_pocket_edition.pdfIn PDF document text
    • http://jewlgems.com/gamergreen_player_carddai2p.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/e8ie7ij/hay_day_hack_generator_online_no_human_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/cbgdggS/werarepuzegalegop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455208/normal_5fde935e48862.pdfIn PDF document text
    • https://cdn.sqhk.co/gisatajofo/J3jcvjc/wotudurisigepozedoni.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/magapeguwabe/allah_tala_ke_99_naam_video.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/derimawugafewe.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/ch_3_cells_and_tissues_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/kexur.pdfIn PDF document text
    • http://ripilunuw.rf.gd/apple_video_star_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/aerobika_user_manual.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_off0000e83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83C 5572 bytes
SHA-256: 6fe5352b0475b1e6da93222a880e7ea8bb9092e81703d86d79195bb60d29aefd
font_01_sfnt_off0000fb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB14 9984 bytes
SHA-256: 75a9d67be58fae2aec696b340569b4ee0078e5b22dff2fd83ac8c647e0f84672