Malicious PDF — malware analysis report

Static analysis result for SHA-256 b342eeb05a6c853a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-27 21:18:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ae10c6794fdcdeb4c10a41f22c1b9549 SHA-1: e818e1f3072bb24aecd9cc92ecdc0f2f0d06481e SHA-256: b342eeb05a6c853adf077e570e7d3b64c8ac55a175789fe038fe9f501e6216f1
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 0.9997

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://jottigo.ru/123?utm_term=tamilrockers+hd+movie+2019++in+isaimini.+co PDF link annotation
    • http://rejasikega.scienceontheweb.net/how_can_i_get_into_my_acer_laptop_if_i_forgot_the_password.pdfIn PDF document text
    • http://fumuroruzej.medianewsonline.com/what_is_facts_and_statistics_in_english.pdfIn PDF document text
    • http://pejokepi.mywebcommunity.org/whirlpool_top_load_washer_troubleshooting.pdfIn PDF document text
    • http://stakingyfi.com/bevafuxd8ov.pdfIn PDF document text
    • http://kewatupu.scienceontheweb.net/arbol_de_decisiones_caracteristicas.pdfIn PDF document text
    • http://1offpark.xyz/ashraful_hidaya_part_240dop.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/ucchayp/ink_master_tattoo_artists_near_me.pdfIn PDF document text
    • http://chaptejvxz.fun/chapter_5_systems_of_equations_and_inequalities_cumulative_test_answerscu5cv.pdfIn PDF document text
    • http://gta-msk.ru/el_conde_lucanor_ejemplo_35l4t72.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/d2sjiCA/60461487209.pdfIn PDF document text
    • http://detonicro.website/storyline_360_templates_freerfn88.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/7394425685.pdfIn PDF document text
    • http://jarobadut.22web.org/diwuweximabikikupukudivo.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/bb592ffc-190c-432c-8c89-3e52263ec70e/fefiboz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55800163-5f2d-4282-8cf3-7f0733acf50c/teratibexuxadowam.pdfIn PDF document text
    • http://gisunoxep.rf.gd/68625288404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd11ae11-d3c6-4555-8c87-70834cb9eb33/how_to_uninstall_unofficial_skyrim_patch_xbox_one.pdfIn PDF document text
    • http://widifusi.myartsonline.com/werimojoxoxonimutot.pdfIn PDF document text
    • http://vozerawirup.epizy.com/lakevevaroni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3abab74-4344-4d62-ba1a-7238d711fe02/kizuguledi.pdfIn PDF document text
    • http://nawupewiviziwik.rf.gd/99972817767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/947e3c13-9eef-4476-a440-135301b942f5/pmd_pro_rq_reviews.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_off0000fc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8B 5764 bytes
SHA-256: 3849fe0b66a3fa7377a1817c2e89d06896c1f14b8d10e48ffb00cb20f3a8f69c
font_01_sfnt_off00011006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11006 10332 bytes
SHA-256: 81b036134f04dcfe1e48175ed0b3aa5723a1a76728c02fec528184db62845188

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