Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1aec9b65d00a02…

MALICIOUS

PDF

67.9 KB Created: 2021-02-19 17:52:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ee5b05c985e73403caf4af2568cbfeb SHA-1: 5d6eccc7b62e3f0fbfb6cbee812fd8087724b0d8 SHA-256: 7b1aec9b65d00a02cf44e1fe5cc9d6fe64c7434f97967b212e808c9bbd65afe0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=life+span+development+santrock+15th+edition+pdf+free In PDF document text
    • http://confirmationhelpcenter.com/konica_minolta_c360_series_pcl_driver_windows_10jr4ue.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453134/normal_60208ea329f90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493888/normal_5fe92d5f3b3bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446496/normal_6010cfa93ec5c.pdfIn PDF document text
    • http://damvglaz1.xyz/tire_rotation_guide_front_wheel_drivej1dz7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_60138004b26bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369316/normal_5fe3131d8e604.pdfIn PDF document text
    • http://rululidevasuv.22web.org/listview_with_base_adapter_in_android.pdfIn PDF document text
    • http://axecheat9.xyz/last_of_us_theme_violin_sheet_musicy0gvq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422371/normal_5fe00bf142416.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/loranoduzuja/24770645045.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/bafawobuxiri.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/australian_national_asthma_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/66352195334.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/mulaxefine.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/oim_ad_connector_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/badimikapux.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/nih_reporter_grant_search.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_off0000cc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC22 5636 bytes
SHA-256: da81cb06ca68df8aac21cafd261c1dfa7c1ca3f06deac69f7e604747b17a728a
font_01_sfnt_off0000df39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF39 10212 bytes
SHA-256: 99a1503ab40ff02ad5ae39597ac3c5a8cda06cb5e3de4cb9875669b03dd88638

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