Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07e43aaec25db3c…

MALICIOUS

PDF

67.0 KB Created: 2021-02-22 12:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8fcef7ad3692d053f9827c89765fbf0d SHA-1: 0dc06c1debd12315b862cd2d4d6c29310e010169 SHA-256: c07e43aaec25db3c26eaf4af2c7eb473dcdb17cb549854fb14ba022665b79f6d
194 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
  • 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/aws?utm_term=2005+honda+rancher+350+2x4+for+sale In PDF document text
    • https://cdn.sqhk.co/faxenukev/VajijeW/38876770466.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/HhageC9/wood_cutting_board_oil_walmart.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368250/normal_5fcebd92cc127.pdfIn PDF document text
    • https://cdn.sqhk.co/bitaxukezor/mhjhcQj/clash_royale_cards.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482418/normal_5fca098c20950.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/ECyghNe/police_monster_truck_robot.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/yEgf52s/79517251450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411491/normal_5fd8b50bd44d7.pdfIn PDF document text
    • https://cdn.sqhk.co/bilanogakiw/U3ifiha/tupoxir.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/lgfhaHy/world_war_polygon_ww2_shooter_rexdl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460690/normal_5fcea5c9159b8.pdfIn PDF document text
    • https://cdn.sqhk.co/wukomidekepu/7hdwuic/walking_dead_cast_still_alive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fazafowunop.epizy.com/cisco_jabber_iphone_end_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/sony_xbr-43x830c_wont_turn_on.pdfIn PDF document text
    • http://kedokonox.rf.gd/82767030082.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_off0000c2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B1 5732 bytes
SHA-256: c6cf3d1d1eb3c3e030750dd64a2c620aaf446fafd215eaec78c014ec6b5983bb
font_01_sfnt_off0000d641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD641 11800 bytes
SHA-256: 618202810eda747b55db46c15238169c65106389c8a3ccca3d00e7ee390d10d1