Malicious PDF — malware analysis report

Static analysis result for SHA-256 160f8a09d72854c7…

MALICIOUS

PDF

75.2 KB Created: 2021-02-11 15:07:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 07e107a5bc20e0193188e3c919409264 SHA-1: dc49448903c09b096f409220cb453639f78b54a6 SHA-256: 160f8a09d72854c730700d61a39a5f44a269635bdaa6b463d81a0029c8c11575
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://crophysi.ru/wb?keyword=best%20car%20designing%20software%20free In PDF document text
    • https://cdn.sqhk.co/noxisoture/fhfvgjf/rutagim.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/77geiic/97246979266.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/Mhijf83/nhl_21_ps4_release_date_canada.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500679/normal_6007442bcb384.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/jcAMUhe/zombie_hunter_airsoft_pistol.pdfIn PDF document text
    • https://cdn.sqhk.co/nanubebebot/Ohh5jdV/30748691680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_601d929b2a468.pdfIn PDF document text
    • https://cdn.sqhk.co/winudesuw/eRAjaS2/beach_buggy_racing_2_mod_apk_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/jjXjhjg/school_of_dragons_redeem_codes_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_601b2b880eec5.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/eoja9Rv/famous_music_ringtone_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zamokaxu/ahjjj1A/jadumixabutoturog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mirepili.epizy.com/english_vocabulary_personality_adjectives.pdfIn PDF document text
    • http://vejebuta.rf.gd/47980852067.pdfIn PDF document text
    • http://dulubuli.rf.gd/minecraft_skin_studio_android.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_off0000e9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A3 5300 bytes
SHA-256: 25b2dc82e6e8db6d1ee957f43778160a6e4f0e8d1d305ea27f04c143d784fa67
font_01_sfnt_off0000fbd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD2 10596 bytes
SHA-256: b4f2f489245c212648976d389032b384db469709a24b918262eebd2283ef8789