Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3dac9d4b7478f92…

MALICIOUS

PDF

66.2 KB Created: 2021-01-31 07:30:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: abc97d0b5cd12c4c0f1c1288836aca06 SHA-1: cdab476021c2ea6da878dd25a4f10b4c4a627682 SHA-256: c3dac9d4b7478f92547876ae7d52979e9aa3c6b8ccca43890a6327a9cbe07f05
136 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
  • 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://leonvi.ru/aws?utm_term=iatf+apqp+manual PDF link annotation
    • https://cdn.sqhk.co/mirusopujame/hfhhghf/18003196031.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/aHGgeia/ninja_arashi_apk_hack_download.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/hiwjido/75084497851.pdfIn PDF document text
    • https://cdn.sqhk.co/mofipife/hcNXcb2/zozaw.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/Lbie03D/starcraft_pop_up_camper_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/jaNjfhc/32338527588.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/jghZphd/neon_glow_air_hockey_2_multiplayer.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/idQgdgh/22724481922.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/gjPiajc/kleptocats_codes_patio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusupap.rf.gd/backflip_ka_dar_video.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/39984067125.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/67064238404.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/7235666617.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/12879680018.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/31484479464.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_off0000c709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC709 4836 bytes
SHA-256: b70b05804e83d9dc4c9e9754184d38acce5a7e6031a1b190c3cf531b9e59457f
font_01_sfnt_off0000d77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77A 10892 bytes
SHA-256: d2ad78a7384ec7b8c2c13acd63facd7d64b6677a4918d3fafb6a362940c0fabd