Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fab89e9face88f…

MALICIOUS

PDF

79.8 KB Created: 2021-04-03 14:17:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 694d19f8fcb85043fed696b74263bdec SHA-1: 5879d2f5eb983363542e3f5448ad2c96b1a1539d SHA-256: e0fab89e9face88f0cbfab80d5545a67737f2ae333c2314bf40aa30bfaf14337
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 0.9967

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://vilenefex.ru/strik?utm_term=what+books+of+the+bible+go+together PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377679/normal_60028a28cddca.pdfIn PDF document text
    • http://latuha.com/att_remote_wont_turn_on_tvfusz1.pdfIn PDF document text
    • http://andyhong.blog/mananogh4kkx.pdfIn PDF document text
    • http://omoikiri.info/android_17_dragon_ball_wiki4zqhz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486748/normal_601bba2071206.pdfIn PDF document text
    • http://lavka-karamel.ru/dymo_letratag_100h_handheld_label_printer_-_bluet6my3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_605dc499c0964.pdfIn PDF document text
    • http://verifiedbadges-form.com/secondary_2_inverse_functions_worksheet_answers0j24i.pdfIn PDF document text
    • http://cosmicgig.com/25656647681bubu5.pdfIn PDF document text
    • http://accface.in/812830356422oaw1.pdfIn PDF document text
    • http://xsale.trade/61497513113z7sak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528780/normal_601afa41c62e9.pdfIn PDF document text
    • http://segway-wheelchair.ru/45848499366m7p2c.pdfIn PDF document text
    • http://in-step.shop/nys_court_officer_exam_2019w5a03.pdfIn PDF document text
    • http://reduslim-buy.site/24392753721nsujz.pdfIn PDF document text
    • http://help-copyrightservice.xyz/43455943645qvc35.pdfIn PDF document text
    • http://soldatskaya6.ru/vuditejuwusofipgm7c.pdfIn PDF document text
    • http://goodnaturak.space/minecraft_kill_aura_1._1039smc.pdfIn PDF document text
    • http://mklhhhh.space/casper_the_friendly_ghost_booktmot6.pdfIn PDF document text
    • http://stat-index-co.com/quran_in_roman_english_free_downloads1u32.pdfIn PDF document text
    • http://cashtanks.fun/gigi_jerseylicious_married32bqg.pdfIn PDF document text
    • http://aov.one/bujixapuzuluzokovovoriwdt3.pdfIn PDF document text
    • http://eferevole.com/100266982027uoq2.pdfIn PDF document text
    • http://nesobaka9.xyz/comptia_server_sk0-_005_study_guidex46g5.pdfIn PDF document text
    • http://br1.red/24927903399eyo8i.pdfIn PDF document text
    • http://yesnutural.space/quadratic_equations_and_inequalitiesjf2fv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000faec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEC 5244 bytes
SHA-256: c2eab18dbdccfc6b2c177f13b0a14b0b6303ec05ebfefb3ad226538bc8a6c955
font_01_sfnt_off00010ccd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCD 10844 bytes
SHA-256: b1a8f4316249325c7c579fb2c86143b689ee741b0106f4d143cb19b1b42279f3

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