Malicious PDF — malware analysis report

Static analysis result for SHA-256 126be8293881e3c4…

MALICIOUS

PDF

72.7 KB Created: 2021-02-12 02:23:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fb1fbcaca18c42d7a1e964f40cab00e7 SHA-1: 8d711a07fbaa3c0ee3f10d2a8d758323df06588f SHA-256: 126be8293881e3c41cb0faa2d558a570e6792fab44cc0238a01bb6ba8a07065c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=things+girls+like+to+be+called PDF link annotation
    • https://mafoxoluz.weebly.com/uploads/1/3/1/4/131483222/9009846.pdfIn PDF document text
    • http://bigno.space/most_powerful_kali_mantra_mp3_downloadx7wyh.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/ijibthO/19647934949.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/YidzPxz/84541695545.pdfIn PDF document text
    • https://cdn.sqhk.co/buxoxurobewi/mMriaPK/carmageddon_2_unlock_all_cars.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/HmjEgcL/97._3_the_wolf_peoria_il.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/hdDYnkT/abalone_shell_smudging.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/0BqgcRK/cloudy_pool_water.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/kojalemitek_vimudetava_xivato.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/Kjdhhif/tower_defense_galaxy_td_level_40.pdfIn PDF document text
    • https://cdn.sqhk.co/seseniluvus/gfQgeEA/diy_face_mask_holder_necklace.pdfIn PDF document text
    • http://omynutural.space/zoremudigubipujolekukosuj1bkhx.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/b7yicjj/14697948711.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rinejifivazori.epizy.com/embroidery_designs_dst_free.pdfIn PDF document text
    • http://lunofalogejutu.epizy.com/rotijipopawagesasesoxoba.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_off0000e241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE241 5356 bytes
SHA-256: f3ad886a61f029483697f1347c0ca4c608b9a18bf211f82cd1ad05b9b5acfab5
font_01_sfnt_off0000f46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46E 9916 bytes
SHA-256: 934e682af88c8e2a03d9a7a2226fad6fd75c06869a80386f0ba9f37e2a345350