Malicious PDF — malware analysis report

Static analysis result for SHA-256 05af87b7dbcccd96…

MALICIOUS

PDF

76.9 KB Created: 2021-03-19 17:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 328782c66b447118a225b8687079e1d4 SHA-1: b2129377bd69cb18d3a32c92c57129b45c57cd18 SHA-256: 05af87b7dbcccd961e30658069d2664c9ad18d3ad13832c6ef28aec3cdc1d347
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://maypoin.ru/wix?keyword=como+descargar+gacha+life+en+pc+2020 PDF link annotation
    • https://cdn.sqhk.co/zarepowake/ghLd8WZ/character_generator_name.pdfIn PDF document text
    • http://samixalube.iblogger.org/wordly_wise_3000_book_8_answer_key_lesson_11.pdfIn PDF document text
    • http://se-mrush.com/711339370888jjpi.pdfIn PDF document text
    • https://cdn.sqhk.co/gizivapejoko/ie4T7Ri/nevoromijis.pdfIn PDF document text
    • https://cdn.sqhk.co/gijosevozu/cuhjrhd/nfl_fantasy_football_sleepers_week_8.pdfIn PDF document text
    • http://hot-money.fun/finding_unknown_angle_measures_3_worksheet_answer_keypuykv.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/AghVfhg/jowawudi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nitovotiroxe.epizy.com/nefisosiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ac393b4-8e14-41ce-affa-d21b6080b38b/how_much_does_diesel_technicians_make_a_year.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/stanley_fatmax_professional_power_station_manual.pdfIn PDF document text
    • http://junonuzutivo.epizy.com/relevance_of_axiology_to_education.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/lebipi.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/english_2_test_writing_effective_sentences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d94735a-38a9-45e7-9818-2aa2516115aa/xukikamatajumowe.pdfIn PDF document text
    • http://romulomejalu.rf.gd/pretest_surgery_drive.pdfIn PDF document text
    • http://gulesovel.epizy.com/60939676370.pdfIn PDF document text
    • http://gizugutopaf.epizy.com/zukipikaviretuxazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c80f1417-1f3c-41df-89b3-2be8eb102d89/how_many_calories_in_a_burger_king_breakfast_burrito_jr.pdfIn PDF document text
    • http://jidugiti.epizy.com/mapipiraxosuliv.pdfIn PDF document text
    • http://wuxanewelupeluv.epizy.com/58214223755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f76bb2-a22e-443b-a211-7bb5e19321d1/beats_studio_2_wired_battery_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/12463564460.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_off0000ee9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9F 5748 bytes
SHA-256: e381319b43929427fcf56c3b567f0a856da0634db615e89677d4813ed6af1cb4
font_01_sfnt_off00010207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10207 10612 bytes
SHA-256: fd0d06e276a8b70223011b7bb10919a974365c948a6dc95bffae2af56d161a0a

Open this report in the interactive analyzer, or submit your own file for analysis.