Malicious PDF — malware analysis report

Static analysis result for SHA-256 6911fcea7e2fa306…

MALICIOUS

PDF

78.8 KB Created: 2021-02-11 13:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6d5e30b9f18232a64fdc626cc0e2d56d SHA-1: 987db0969d26e5d1c39ed597f36810bf2064d475 SHA-256: 6911fcea7e2fa3068f051a47fc75e7a3bc5dcaaf21eb8069becdbe0c3d010159
136 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
  • 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/wb?keyword=bible%20verse%20desktop%20wallpaper%20hd PDF link annotation
    • http://tuwobezike.22web.org/91027197375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452193/normal_5fe779d96cffc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495849/normal_6023e7ddb81cd.pdfIn PDF document text
    • https://cdn.sqhk.co/xajegakagiz/f8JhjNQ/get_more_likes_on_your_fb_post.pdfIn PDF document text
    • http://malapiwo.66ghz.com/aoe_4_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fapiwejagiz/rOicQ4S/31734181374.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403266/normal_5fd0b785cb37b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470975/normal_5fcd024988e81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_5fe91f3bd6898.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/rewepalazamiso/kgf_audio_songs_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/perbedaan_uji_parametrik_dan_non_parametrik.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/liloraneviworinitirig.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/blank_calendar_template_2018_august.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/zatisadoxapuwom.pdfIn PDF document text
    • http://molodetagako.epizy.com/ximasuje.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_off0000f824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF824 5452 bytes
SHA-256: d4330ddec3df2c4ccfb36d1fd00971d0453b306f29cfc49f262a3bc90bfde294
font_01_sfnt_off00010ab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB7 10492 bytes
SHA-256: 383541d5c453e14d2316e7c0ec4aa51f7e17d9b16f0e93001894ae964fb88ff1