Malicious PDF — malware analysis report

Static analysis result for SHA-256 321b274ec5b0dca5…

MALICIOUS

PDF

77.2 KB Created: 2021-03-07 19:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 25ac702787db2b3823212d8933533ce8 SHA-1: 760a53dd2daf69d7468cf31e4b4456cccf0076f5 SHA-256: 321b274ec5b0dca52abf64ac673ad1c134af4097048c63cf3d0d6ddab90702eb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://kuzutuzo.ru/wix?keyword=apk+for+game+hacker PDF link annotation
    • http://ranking-se.com/charmglow_gourmet_series_grill_for_sale5su0s.pdfIn PDF document text
    • https://bunofavaluz.weebly.com/uploads/1/3/4/6/134661637/c97169f.pdfIn PDF document text
    • https://pemiroma.weebly.com/uploads/1/3/1/3/131383733/fb2d3e85d.pdfIn PDF document text
    • http://jilududegurim.22web.org/mododolupojozujaxamona.pdfIn PDF document text
    • https://vovasodakujex.weebly.com/uploads/1/3/0/8/130874601/d2da3063b9e6.pdfIn PDF document text
    • http://bighome.space/digestive_system_grade_4_worksheet6qbmf.pdfIn PDF document text
    • http://nasporte1.fun/37188418856lao0x.pdfIn PDF document text
    • http://rejuxipo.iblogger.org/songs_app_iphone_free.pdfIn PDF document text
    • http://dressnbuy.com/remember_me_song_coco_sheet_musiciaqmq.pdfIn PDF document text
    • https://sumulepali.weebly.com/uploads/1/3/4/8/134882140/592bc.pdfIn PDF document text
    • http://getakabawi.22web.org/xonomadakewuditeza.pdfIn PDF document text
    • http://harkateine.fun/8879054413523az3.pdfIn PDF document text
    • https://toxozuduz.weebly.com/uploads/1/3/5/2/135295771/e12e7e8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nokezipaxizowox.epizy.com/jixaduvofux.pdfIn PDF document text
    • https://e0f910ba-f4aa-4d6b-87f6-24d78cda99ab.filesusr.com/ugd/cc15ef_e9e26e0998584e629e1d59472ce3e40d.pdf?index=trueIn PDF document text
    • http://keberefan.rf.gd/buchi_mini_spray_dryer_b-_191_manual.pdfIn PDF document text
    • https://71a0d42b-91d5-4e94-9338-ff69ca8a624b.filesusr.com/ugd/e5d5e5_2646003c277d470baf7650eda5627ee8.pdf?index=trueIn PDF document text
    • http://kutoduno.rf.gd/51181316002.pdfIn PDF document text
    • https://dc273c12-e125-4738-b2e6-b96bc4bd5eb7.filesusr.com/ugd/c8df25_bb9b0c27647d463ca0f6066cf754de77.pdf?index=trueIn PDF document text
    • https://aed022ca-8a9d-452d-9022-56a74a585a14.filesusr.com/ugd/4d548e_7e2c9efd5d374bd589b45a9bc238b60b.pdf?index=trueIn PDF document text
    • http://porumujowupof.epizy.com/bartholin_cyst_treatment_guidelines.pdfIn PDF document text
    • https://68420551-d949-41c4-975b-2ae86aa6d062.filesusr.com/ugd/09c3c7_83f9f3967e19427b886efc88cd17c863.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE639 4828 bytes
SHA-256: b440a8d1bbb958fe3cf5ad1bd87f928640ef7a5d75e85671914233382e49a18c
font_01_sfnt_off0000f698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF698 10072 bytes
SHA-256: ab1adb93714b6a86578fd6c2811014e3bd62c52cb8f06e7b86f8650ce8fba354
font_02_sfnt_off00011910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11910 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34