Malicious PDF — malware analysis report

Static analysis result for SHA-256 6289506944de2201…

MALICIOUS

PDF

78.3 KB Created: 2021-04-05 00:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 224a5723ada5fa730d5aba36aea2dbe0 SHA-1: ac1db3d0111a31969be36576b704ccf87afdee78 SHA-256: 6289506944de220118c5058b7523020814aea6defd3355090e21bd14add46e82
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://dugedepap.ru/award?keyword=anemia+hemolitik+autoimun+pada+anak+pdf PDF link annotation
    • http://fruitslope.online/wotisiyl6ea.pdfIn PDF document text
    • http://bonusiotsbera.online/what_do_sexually_frustrated_meanx3nl7.pdfIn PDF document text
    • https://cdn.sqhk.co/wejawujagi/hahgGjj/supongo_que_in_english.pdfIn PDF document text
    • http://raftgjgr.space/sad_love_assamese_whatsapp_status_videojhmr6.pdfIn PDF document text
    • http://8bitbeardsco.com/27307832242nstcn.pdfIn PDF document text
    • http://worldhold.online/free_force_outboard_manualse938.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/dGhhkje/xurunewaxidep.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
    • https://uploads.strikinglycdn.com/files/f48a547c-f962-4ce8-a353-b92cf5b68f62/how_long_to_get_stimulus_check_once_mailed.pdfIn PDF document text
    • http://mevonaku.rf.gd/hmis_label_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/honey_bun_nutritional_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/88413098097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc474f7c-733f-4b99-8dab-9c8d15abe9e1/apc_backup_ups_es_500_battery.pdfIn PDF document text
    • http://betiwewis.rf.gd/52977464008.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/76542987543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d339de05-bbde-4570-ab34-80af835d6c0c/lexepunok.pdfIn PDF document text
    • http://pefanusomi.epizy.com/bhagavad_gita_chapter_18_slokas_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/the_serpent_power_book_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d906f2d2-16ad-424b-a438-b4e88a7ac748/kubolasitilenugi.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/1_month_ectomorph_transformation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b91275-6321-4048-affa-7450c6031e33/cisco_ccna_exam_640_607_certification_guide.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 4940 bytes
SHA-256: 5de8502d06370a84b59830f9b2569b9349e28468a1389e305fe3a5a7f9ab1337
font_01_sfnt_off0000fa74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA74 10216 bytes
SHA-256: 5c799d8f67d497606fc3624d1ddf572a13bde944a8b827c36a412f4b85f9f293
font_02_sfnt_off00011d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D56 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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