Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac177261b7f271df…

MALICIOUS

PDF

72.0 KB Created: 2021-03-06 23:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05b9cfb96b2de7e9c4b1365b4e41f9cf SHA-1: a6f815a5233e708e0dbfdcb1d22458263605f695 SHA-256: ac177261b7f271df2a9ecc19ea2ae48d93c1db95d23501d3e69ab41f4abe0f56
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://crophysi.ru/award?keyword=colt+ar+15+6920+magpul+for+sale In PDF document text
    • https://selepofobalolu.weebly.com/uploads/1/3/1/8/131856949/vufajafogola.pdfIn PDF document text
    • http://goxamid.mypressonline.com/2010_amc_8_problems.pdfIn PDF document text
    • https://tusixifowidafoj.weebly.com/uploads/1/3/1/4/131437116/2bb8a2e.pdfIn PDF document text
    • http://lighttravel-ng.com/chalkboard_sign_printable_templateomzqs.pdfIn PDF document text
    • http://kasaxeko.mypressonline.com/jukanurixawafifibudid.pdfIn PDF document text
    • http://shoop-fk.ru/bhootnath_song_video4enu6.pdfIn PDF document text
    • http://getliterate.online/despacito_ukulele_tabs4sbbr.pdfIn PDF document text
    • https://cdn.sqhk.co/dowivita/emN0B7b/vokofajeguriv.pdfIn PDF document text
    • http://trysucre.pro/xumajodoserewulilexulog9ski2.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/gdhaX3a/nozidajomedogapuzuxanuz.pdfIn PDF document text
    • https://cdn.sqhk.co/vatuliwa/jgdojjy/65215216742.pdfIn PDF document text
    • https://xevefozivoro.weebly.com/uploads/1/3/5/3/135339272/1430208.pdfIn PDF document text
    • http://nasty666.space/529101443963m8x7.pdfIn PDF document text
    • https://zewujinewototi.weebly.com/uploads/1/3/4/7/134749630/reduvinuresupoli.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/icmjhsu/27029206613.pdfIn PDF document text
    • http://mafejaruvoje.sportsontheweb.net/pegasus_single_handle_kitchen_faucet_repair.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/58f6e343-1692-4f8b-80c6-6ee38010b8db/59551400070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4e34b2a-8bfb-4814-9827-ba81019c5480/graduate_software_tester_interview_questions.pdfIn PDF document text
    • https://67bb8873-ca08-4da4-87c0-60a8072ebff6.filesusr.com/ugd/a838c0_36b0487756fb4bc6a7d28c1ecc800384.pdf?index=trueIn PDF document text
    • https://a0f88182-e1f9-4a9c-ba22-d5ce004c6985.filesusr.com/ugd/2f3216_0a7451e796c34831ab1f977d42f2b62f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb5eee06-4799-4e4e-9ae6-8e8d80ff1c89/kali_linux_nethunter_install_nexus_6.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_off0000daff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFF 5884 bytes
SHA-256: 06d20afeb18c01de6c92de1ca7c61831941e6dd7f4fdd0efa000b309a6f94392
font_01_sfnt_off0000eef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF2 10308 bytes
SHA-256: c61a750c7bbb5a38d1b513918aab7a4c9f062ea9cf27f357186d6521dfeff567