Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eca8df8f523caed…

MALICIOUS

PDF

72.3 KB Created: 2021-03-05 05:35:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb4b24a4f3b2b25342934d51cb17d7fd SHA-1: 6ad0b48578b025d4c722c2f6c331f4cafdb2e5de SHA-256: 3eca8df8f523caedcdf075465349cfd0621627d8df8b47f410fc17875926e666
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/award?keyword=three+questions+by+leo+tolstoy+summary+in+hindi PDF link annotation
    • https://geguguxe.weebly.com/uploads/1/3/4/5/134513061/vupikelaminevete.pdfIn PDF document text
    • http://white-x.fun/notujaraponuzanubitarej5s7jw.pdfIn PDF document text
    • https://liwavijej.weebly.com/uploads/1/3/4/3/134379327/fiwipodivovukowerer.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/9jcghii/24391946405.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/cec97d0.pdfIn PDF document text
    • https://wipowolulufobud.weebly.com/uploads/1/3/1/4/131437369/9ae50cf5.pdfIn PDF document text
    • https://fapudajom.weebly.com/uploads/1/3/2/6/132681453/1631211fc8c7.pdfIn PDF document text
    • https://zeregosuw.weebly.com/uploads/1/3/6/0/136055393/f157274a10c0.pdfIn PDF document text
    • https://cdn.sqhk.co/rudugebakivo/gjvmhb1/suzufogisusoti.pdfIn PDF document text
    • https://sexanugujox.weebly.com/uploads/1/3/4/2/134266496/6003508.pdfIn PDF document text
    • http://weinmvc.net/avicii_best_songs4b93p.pdfIn PDF document text
    • http://smartcoin.design/schlage_keypad_deadbolt_user_guide4l906.pdfIn PDF document text
    • https://ponutafozo.weebly.com/uploads/1/3/4/7/134705240/nujidasitap-wejaf.pdfIn PDF document text
    • https://cdn.sqhk.co/mikevoponage/iKBgdp7/454624387.pdfIn PDF document text
    • http://kamaz-ftc.com/organizer_day_by_day_2020tvyp1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vewokepewaki.epizy.com/factoring_review_sheet_answers_factoring_using_gcf.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/hp_network_node_manager_admin_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/can_co-trustees_act_independently.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/lonely_planet_guide_berlin.pdfIn PDF document text
    • http://ketolukimozol.epizy.com/carefree_of_colorado_awning_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/is_egyptian_arabic_hard_to_learn.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_off0000dfaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAA 5384 bytes
SHA-256: 07c6b34f42ae810098e78ae95b1fb76720a1e3381a7141ddb79194d15b63b6c4
font_01_sfnt_off0000f1c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C9 10004 bytes
SHA-256: 8c94f0f1c6316dcf3510ef7883757cb6e2b28ebda988426b17a9f94240b9a633