Malicious PDF — malware analysis report

Static analysis result for SHA-256 853bfa18f26e2574…

MALICIOUS

PDF

65.8 KB Created: 2021-01-21 13:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 85064de52622969847fef9e0a6f0c2fb SHA-1: 8eb5c09d468a06603de12d6bca3f79ab3c435fdb SHA-256: 853bfa18f26e2574216bacd3cf27dee54c9569a7473e408bc3c8fe37931fd853
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://baarspo.ru/aws?utm_term=lagu+yang+terdalam+fatin+lirik PDF link annotation
    • https://site-1185524.mozfiles.com/files/1185524/asymptomatic_hematuria_guidelines.pdfIn PDF document text
    • https://site-1176998.mozfiles.com/files/1176998/95616370804.pdfIn PDF document text
    • https://cdn.sqhk.co/sepetuvab/jbh7SgT/school_of_dragons_free_membership_redeem_code.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/if1pfge/zevomosikadamebadi.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/ihic5gd/custom_skin_editor_creator_for_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/1gkgdie/pop_bird_deluxe_apk.pdfIn PDF document text
    • https://fekobuwag.weebly.com/uploads/1/3/1/8/131858403/54894faa12.pdfIn PDF document text
    • https://vasejafarobi.weebly.com/uploads/1/3/1/4/131454155/nosiv.pdfIn PDF document text
    • https://cdn.sqhk.co/xidupesijij/gi8idA6/sajosajazuxinefuvi.pdfIn PDF document text
    • https://site-1175421.mozfiles.com/files/1175421/pinball_3d_print.pdfIn PDF document text
    • https://site-1175416.mozfiles.com/files/1175416/warlords_of_aternum_hack_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/dagujoxofafubugow.pdfIn PDF document text
    • http://wupenokisu.epizy.com/visiting_card_software_free_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/full_form_of_indian_navy_mr.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/mogevetowikelulaxifoz.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_off0000c3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C7 5156 bytes
SHA-256: b9d8f78be8dc57ce347efe2651c7566217819df355d28bc08ee5c58dcabe556c
font_01_sfnt_off0000d54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54F 10900 bytes
SHA-256: 6b607485566cefe2ab684a88d4532618690e9eeccb115748cb07871c09f077a3