Malicious PDF — malware analysis report

Static analysis result for SHA-256 684c69dcc962ec3b…

MALICIOUS

PDF

72.6 KB Created: 2021-02-13 23:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4dd548fc60023104df375ab435922506 SHA-1: 9648ca3084ca393b67e8d8f38e747e9e3116d09f SHA-256: 684c69dcc962ec3b5e387a8998ef8fa8238a3518127f142b9f4d6e1c551e42e2
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://bologen.ru/aws?utm_term=top+collage+maker+apps+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500199/normal_5fd913c6a9549.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/jgIghb6/motorbike_track_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/idghfhc/miluge.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/x7qhgU7/wedding_salon_2_mod_apk_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zabitokepum/hdoxfG8/36596867884.pdfIn PDF document text
    • https://cdn.sqhk.co/tovisegag/3o6djjt/class_9_science_chapter_13_notes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489054/normal_6009a9926432f.pdfIn PDF document text
    • https://cdn.sqhk.co/tarudifirew/jaiaje3/vozewularagobaxufi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495251/normal_600f7f6e050a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372982/normal_5fedc8ace0a61.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/davubewu/rukokamusefiwipitafu.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/pizugariji.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/9366990782.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/52197279916.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/clea_astronomy_software_free.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_off0000df15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF15 5408 bytes
SHA-256: 7fa2a767f58e02f1de31af9e018616e80c0794e95f02d4eb0b317fade25f5330
font_01_sfnt_off0000f168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF168 10692 bytes
SHA-256: aa01b2dd7233d6d06760a10e229bf02f368319f25db6f331de1269b537bf8ce4