Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b1f163c739fcf53…

MALICIOUS

PDF

71.0 KB Created: 2021-02-06 03:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 95d70c7909ca006029d30f56bcdfa292 SHA-1: 98adf8948a8d50678c770d5caf82b02969f8f82d SHA-256: 1b1f163c739fcf53ee8c4fdb1a7b26c150df2a30138bba169d8846ff0bcf9837
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=project+performance+assessment+report In PDF document text
    • http://regsen.website/sample_job_costing_spreadsheetsxz77a.pdfIn PDF document text
    • https://cdn.sqhk.co/tefivezik/Oha5ijh/puditexonuw.pdfIn PDF document text
    • http://easterthjg.com/autocom_delphi_2014.3_keygen7wvhm.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/hcjjbjd/97769382366.pdfIn PDF document text
    • https://cdn.sqhk.co/woledibiroju/jgWtC2d/word_chums_game_app.pdfIn PDF document text
    • https://cdn.sqhk.co/segenoliz/Mhbvjai/79970050222.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/ggb7oiQ/crazy_store_online_shopping.pdfIn PDF document text
    • http://eferevole.com/kohler_shower_valve_installationaxokh.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/hgjdyMm/bapitiginevisunuxavalogal.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/ekhchgY/55828120758.pdfIn PDF document text
    • https://cdn.sqhk.co/damapegapi/dzjbCig/happy_poo_jump.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/ajajjJO/mirurotoz.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/geibVdo/galoniwimuzajen.pdfIn PDF document text
    • http://fit-italy.space/cormac_mccarthy1v4i3.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/eifjhhe/slots_pharaoh_s_journey_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8F 5208 bytes
SHA-256: b08cadb2aab3bb9d6d073992533fb719193d143ab8cc8522086faa3ae0a4ccab
font_01_sfnt_off0000ec2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC2D 10308 bytes
SHA-256: 0dccccd816d6e7c7e69f21a436b5c547c11ce82c4adca330051feeec0df61a0c