Malicious PDF — malware analysis report

Static analysis result for SHA-256 412b619123f1206e…

MALICIOUS

PDF

89.5 KB Created: 2021-03-21 01:13:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8e2da293bdce647e1db993ebe0950509 SHA-1: 9962b7374aaead25c7674ae51bfe38c907356926 SHA-256: 412b619123f1206e9cbca36ae2adb3ca039745400ad44dfcb242a32ffb70c649
126 Risk Score

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-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://dugedepap.ru/123?utm_term=color+pencil+art+techniques+pdf PDF link annotation
    • http://xanejog.medianewsonline.com/surawabefit.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/functional_independence_measure_deutsch.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/95137258250.pdfIn PDF document text
    • https://cdn.sqhk.co/mafowixodi/cjfE4hh/strategic_planning_for_nonprofit_organizations_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/sRgeP77/rijofo.pdfIn PDF document text
    • http://look-hotel.com/merge_dragons_dragon_gemsfmf2l.pdfIn PDF document text
    • http://tcerkovniekupola.space/42581399685z6oxd.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/M22xhar/xelimomenali.pdfIn PDF document text
    • http://rupaduwovuw.getenjoyment.net/money_banking_and_finance_b._com_part_1_notes.pdfIn PDF document text
    • http://fusekimutoxi.sportsontheweb.net/calendrio_perptuo.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/ic2iagj/gabenukelirukitewoz.pdfIn PDF document text
    • http://cleanup-sale.site/gaggia_burr_grinder_manualrupzq.pdfIn PDF document text
    • http://homearfes.com/enrique_iglesias_bailando7b6vk.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/gs9jgjf/milarisapezeg.pdfIn PDF document text
    • http://mevixonur.mywebcommunity.org/attachment_style_questionnaire_feeney.pdfIn PDF document text
    • http://lubevos.scienceontheweb.net/maven_tutorial_udemy.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/gdhbhhY/15302810497.pdfIn PDF document text
    • http://pozuvixa.getenjoyment.net/77357073498.pdfIn PDF document text
    • http://circleshtang.xyz/guzijukiwuwuuv0vx.pdfIn PDF document text
    • https://cdn.sqhk.co/zedozomi/jc8jaJk/breadwinner_dictionary_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/aVWMgfI/bathukamma_dj_songs_telugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bavidoripo.epizy.com/steelhead_fishing_report_elk_creek_pa.pdfIn PDF document text
    • http://woxenebifa.rf.gd/bolodiwekiguror.pdfIn PDF document text
    • http://fozozip.onlinewebshop.net/74199159966.pdfIn PDF document text
    • http://wuwepapose.epizy.com/lifaxoku.pdfIn PDF document text
    • http://manimakokubeg.epizy.com/how_to_connect_gamesir_t1d_to_android.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_off00011c15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C15 5272 bytes
SHA-256: 4bc7a9b372fc969c7bb76675b974326722c9b22ea3cc968bc35fbf51543b8031
font_01_sfnt_off00012df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DF4 11980 bytes
SHA-256: 8de02bf5d245fc27d3ce1190b703fbae774988cfe961ec1c19a3eb6ddb717125

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