Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8a372383bab7999…

MALICIOUS

PDF

67.7 KB Created: 2021-02-15 14:44:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bd44cfaefca8d244e60cb3df0311e622 SHA-1: ad224fe57d7dc774ab312a163d04caeda6949441 SHA-256: d8a372383bab7999d70a3b30357a8fe6750720840f5335e87c577e7bd27688c7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=wifikill+pro+apk+mirror In PDF document text
    • https://static.s123-cdn-static.com/uploads/4489853/normal_5fe5605854cd6.pdfIn PDF document text
    • http://wazasutosas.iblogger.org/ekahau_rtls_controller_user_guide.pdfIn PDF document text
    • http://doxugivo.22web.org/gudugilejulikurisizebogi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_60011d683e68b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447914/normal_5fe53228cca70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367633/normal_5fe109ae721b7.pdfIn PDF document text
    • http://ritixabig.iblogger.org/mathematics_vision_project_answer_key_3._1.pdfIn PDF document text
    • http://wubopabezijoso.22web.org/fizibulekazorufidamij.pdfIn PDF document text
    • https://watinamubil.weebly.com/uploads/1/3/0/8/130813586/f763ff1023d3.pdfIn PDF document text
    • http://kukushka.space/bucket_list_marathi_full_movie_mp4hgs4j.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://tuvakaj.epizy.com/brain_training_puzzles.pdfIn PDF document text
    • http://vutekumini.epizy.com/bs_player_pro_apk_1._32.pdfIn PDF document text
    • http://guruwemuzotal.epizy.com/nijekujefapuropukixix.pdfIn PDF document text
    • http://sozizowumideni.rf.gd/29053785276.pdfIn PDF document text
    • http://vawutalakomu.epizy.com/happy_song_frank_mills_piano_sheet_music.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1DD 4432 bytes
SHA-256: 884c9be2c0a1e8e94382ae269a5215041c053697c48a9fd8f6e71b6acc64bdc9
font_01_sfnt_off0000d0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E0 10184 bytes
SHA-256: 80e9dbd34fe01f3da5f529c0687ebfbde1e8c1497576ce1000783c67ac68bb61
font_02_sfnt_off0000f3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CC 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176