Malicious PDF — malware analysis report

Static analysis result for SHA-256 c984c64cc1c51c80…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 03:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b7641a33e95683f33243977b5122594a SHA-1: 9682dc8fe662654b52eea3fb535a015dc5bcd579 SHA-256: c984c64cc1c51c80c861d8f1f867ebf3df2e95235497260cc1b754897a4c2d4e
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://jottigo.ru/wix?keyword=red+ribbon+week+2018+dates PDF link annotation
    • http://tameenegypt.com/10372470308e4um3.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/sijapome_muxize_jigejaxemo_kifevujexi.pdfIn PDF document text
    • http://martakkord.ru/icao_annex_14_deutsch5c9wm.pdfIn PDF document text
    • https://vixoketos.weebly.com/uploads/1/3/1/4/131453026/todev.pdfIn PDF document text
    • https://vapukukoson.weebly.com/uploads/1/3/0/7/130776878/7f0bed934f847.pdfIn PDF document text
    • http://mattelipsticks.site/botopedokixevasevonesaleenwsh.pdfIn PDF document text
    • http://afracheat7.xyz/driver_wifi_netbook_acer_aspire_one_happygp083.pdfIn PDF document text
    • http://wow50.pro/63049471362777ja.pdfIn PDF document text
    • http://itawegan.fun/ffxiv_samurai_pvp_guidew3lw0.pdfIn PDF document text
    • https://kulabukotijol.weebly.com/uploads/1/3/4/7/134703535/128c8c0.pdfIn PDF document text
    • https://mamulexujixi.weebly.com/uploads/1/3/5/3/135390653/totewopimo.pdfIn PDF document text
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/zuvodom.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/dafumuxitupav/top_spiderman_games_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/anushka_sharma_video_songs_free.pdfIn PDF document text
    • http://foxebunuref.epizy.com/42200460197.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/consumer_digest_car_buying_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/connect_italian_avanti_answers.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_off0000dc66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC66 5608 bytes
SHA-256: 0950dfc9752de4d95ae8d907dbc94e6d9a6f495cf409592ed07c19ef175c725d
font_01_sfnt_off0000efa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA4 10884 bytes
SHA-256: 34b499bd834a914d92db4ffb04570ebc96ecdae9a96d3eeb60676bcc947121b2