Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7e458bc7642651…

MALICIOUS

PDF

72.4 KB Created: 2021-02-23 03:54:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7725ecf015a1baec95322243fe0350ae SHA-1: bb9b3e5780398a1adf6a29cc97f9ef4345127724 SHA-256: 0d7e458bc764265132f957c4ee00c35f771e8e354414d9f33b64c3b2132ee2da
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=the+lottery+discussion+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/goduwonon/3P4hfhe/dilated_cardiomyopathy_treatment.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/hehbnic/fonuwor.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/iihjSih/76981023069.pdfIn PDF document text
    • https://woxopipuwesubaj.weebly.com/uploads/1/3/1/4/131453061/6534636919385d.pdfIn PDF document text
    • https://cdn.sqhk.co/furugilenu/csf3HVY/funny_stickers_for_snapchat_group_chats.pdfIn PDF document text
    • https://zidadosivifaju.weebly.com/uploads/1/3/0/7/130775619/476be5.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/wetevali/manual_de_montagem_cambio_zf_s5_420.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/unduh_asian_dating_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/65480015571.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/79372489041.pdfIn PDF document text
    • http://vekamujibatebig.rf.gd/powerpoint_slide_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/68636466626.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/partner_availability_form_starbucks.pdfIn PDF document text
    • http://funixeja.rf.gd/4862081181.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/hours_to_minutes_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/utorrent_pro_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/dvd_burner_app_for_android.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_off0000e041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE041 5296 bytes
SHA-256: e48e626ff778419e4de0dc6ebd5d945764716116718ec03d04c16db73164b6a7
font_01_sfnt_off0000f250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF250 10040 bytes
SHA-256: 2849bef31e22f824eeaaba2a108b5ccad2705f18bf99924eb33875bdbc1c9729

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