Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5341f66e203a77d…

MALICIOUS

PDF

71.1 KB Created: 2021-02-14 12:03:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fbe2122b3b2ccb038ac70064c5e7cbd6 SHA-1: 23d247aa8775513440f20395ab1c665455a921a2 SHA-256: c5341f66e203a77d326e217528bd21e86e83f92e5823cf79e605b61bb81dcee8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wb?keyword=angry%20birds%202%20mod%20apk%20offline PDF link annotation
    • http://pasoxegidameso.iblogger.org/android_studio_set_text_bold_programmatically.pdfIn PDF document text
    • https://cdn.sqhk.co/xekemini/gMib9gd/rafusikejujidoralum.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/93iihcp/how_to_beat_impossible_tic_tac_toe_game.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466664/normal_5fc94e85e03b8.pdfIn PDF document text
    • https://betozuwozoz.weebly.com/uploads/1/3/4/1/134108580/kaboxi-kinanasuwev-setedowukozugu-tewinid.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/iSjclhe/chess_opening_strategy_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/wazilisiko/hjijcjc/politics_and_the_english_language_questions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480590/normal_5ff47640e2b9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5ff093af2cc6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458404/normal_600b9ec351e1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380857/normal_600e058f675fc.pdfIn PDF document text
    • https://xewaxamuroz.weebly.com/uploads/1/3/4/5/134529724/vatajujul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468572/normal_60044d02295ae.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/ijigMjd/custom_sword_makers_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/remimidotomi/Hagjjbl/sas_urban_survival_guide_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/bjgfDCd/human_fall_flat_ps4_boat_level.pdfIn PDF document text
    • https://jukikekiku.weebly.com/uploads/1/3/1/4/131453151/283827ab4d969.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozajogef.rf.gd/meselemekijore.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_off0000d90c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90C 5788 bytes
SHA-256: f73abb26c3b97aca0b10e8e688e6a6eaa1a07aa41d34be25d8ceb03efef7c8d6
font_01_sfnt_off0000ecb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB9 10072 bytes
SHA-256: 160631df6d3ae8cbc501ff8fa82a51877cb08b8d23e0927583cf8c3b1e7ec816