Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b92d1a8333afe53…

MALICIOUS

PDF

74.7 KB Created: 2021-04-07 14:58:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 846e32613bff5df1dddba97b70e4e56a SHA-1: c3a4d39ac16864a5e5b6381b790c8c5160b339fd SHA-256: 7b92d1a8333afe537499f9d2e664c3d3fc4b1f66b3f4adc54062e9606a42b341
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 0.9989

Heuristics 5

  • 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.
  • 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=fernandes+sustainer+fsk+101+manual PDF link annotation
    • https://cdn.sqhk.co/nuduniguwufo/yNhdIgf/spacex_starship_hop_test_date.pdfIn PDF document text
    • http://lefuduzitenazig.22web.org/centralized_management_console_hp.pdfIn PDF document text
    • http://nopefujozake.iblogger.org/bombsquad_mod_money.pdfIn PDF document text
    • https://cdn.sqhk.co/puwipaneke/8Ngizhh/entertainment_book_newcastle_contact_number.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/hpjfPib/war_table_debris.pdfIn PDF document text
    • https://cdn.sqhk.co/botonerepap/qb0n1hg/piano_keyboard_app_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/bikegola/nLhihjJ/sims_3_free_mobile_download.pdfIn PDF document text
    • http://tuvivukaroj.mygamesonline.org/realidades_2_capitulo_2b_vocabulary_check_sheet_1.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/24093682080.pdfIn PDF document text
    • http://mujabelor.mywebcommunity.org/jifapiwuwisataxalok.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
    • http://waxusumuguk.epizy.com/61322817383.pdfIn PDF document text
    • http://digaruwuw.rf.gd/83889600682.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04ece494-d98e-436b-ae4e-99c297c9d985/how_to_make_honeywell_barcode_scanner_auto_enter.pdfIn PDF document text
    • http://rabatabofi.rf.gd/62639370593.pdfIn PDF document text
    • http://mifotabelimudon.myartsonline.com/html_input_file_only.pdfIn PDF document text
    • http://bogalibamadom.myartsonline.com/logical_problem_solving_techniques.pdfIn PDF document text
    • http://kuxubakelixuzot.atwebpages.com/slope_protection_methods.pdfIn PDF document text
    • http://rabelinowizufe.myartsonline.com/antonio_gramsci_prison_notebooks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ce44ae-dab9-40ae-9704-a73017050703/baxabijemujiwefazonemigal.pdfIn PDF document text
    • http://pakifisaxere.epizy.com/disenteria_amebiana_pediatria.pdfIn PDF document text
    • http://dominomufu.rf.gd/95202948781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b84b17bb-6682-4987-b40a-3dc2a0651599/god_emperor_of_dune_miniseries.pdfIn PDF document text
    • http://wujawejibizub.epizy.com/9581177666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/486bb6b3-5b93-49f2-a260-f39e9c08e5e5/gepoxavodumetilezup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C6 5040 bytes
SHA-256: a3d04e12ed16d4bdb3c55650a4364432c054ba4d406684a46dc7fc360b0b79eb
font_01_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 10648 bytes
SHA-256: ac0dc5e3f68a25b0723da378757264c3ee199a23e833658acec521a06f9b0bb6
font_02_sfnt_off00010f20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F20 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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