Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dbc9b8896565ad4…

MALICIOUS

PDF

40.5 KB Created: 2020-11-06 21:45:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3610233419e82ee924a92de23b052f55 SHA-1: 455676d336af9c4ffd7b14a70d878266478a6635 SHA-256: 0dbc9b8896565ad4eaab2db900399cf2214f7825a0f7c218088cd998ab65ac63
84 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffi.ru/aws?keyword=call+of+duty+torrents PDF link annotation
    • https://sazalilo.weebly.com/uploads/1/3/4/5/134592982/a41e7041d6aec6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_5f8fc17d040bd.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/wepupumalixetipu.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/rerinago/51534832284.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/sagob.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/tekiwijuw.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/japanese_technology_after_ww2.pdfIn PDF document text
    • https://kinateno.files.wordpress.com/2020/11/32907075531.pdfIn PDF document text
    • https://bomizive.files.wordpress.com/2020/11/36059793624.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/hero_bike_parts_price_list.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/code_alarm_catx4_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/91180680809.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_off00005e00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 4908 bytes
SHA-256: 2f1cf3615fb2a41a759485a1f1e61e3c22aa9fc93246a0ed7f3cbe0420e1592d
font_01_sfnt_off00006eca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECA 11520 bytes
SHA-256: 074e4412a3a1502b3f7157cc12c18a938bd2f1a158033719c8d58d4b4f0cc076