Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e9abd9563e9e7c8…

MALICIOUS

PDF

78.8 KB Created: 2021-03-23 01:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: dcdc14a6bc765f67c7ed363976a471ff SHA-1: 0008159f509f89ed7d459c49702cc7b4c9a43a7d SHA-256: 3e9abd9563e9e7c8e895da9c97aecafd67d0de6e991bfcf6a13e0ba9427dea5f
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that mimics a search engine result for a recipe, directing users to a suspicious domain. This is a common lure for phishing or malware delivery. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to delivering a second-stage payload via the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=how+do+you+cook+ham+steak+in+the+oven PDF link annotation
    • http://pajopoxofof.iblogger.org/whirlpool_quiet_partner_ii_cycle_time.pdfIn PDF document text
    • http://foxuzopigudomin.22web.org/synonyms_worksheets_1st_grade.pdfIn PDF document text
    • http://visodesux.iblogger.org/bamenojofix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://c3373aeb-ed74-4f2d-b631-fa679e0a3f6f.filesusr.com/ugd/cbe7f7_364adc0428b342488eaf6645a6b5f1d8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/la_fuerza_de_sheccid_libro_completo.pdfIn PDF document text
    • http://zadavagex.rf.gd/arm_cortex_m0cortex_m0.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/carrom_game_rules.pdfIn PDF document text
    • http://zenejoku.rf.gd/lagu_aku_mohon_jangan_pergi.pdfIn PDF document text
    • http://muwojes.epizy.com/sparknotes_flowers_for_algernon_progress_report_11.pdfIn PDF document text
    • http://supuwevul.atwebpages.com/javume.pdfIn PDF document text
    • http://woxitomig.rf.gd/vojinepulelilixemokusuvaj.pdfIn PDF document text
    • http://ximagufitefem.epizy.com/82300227337.pdfIn PDF document text
    • http://masidurexo.rf.gd/88342201995.pdfIn PDF document text
    • http://guganevefaluson.rf.gd/how_to_become_a_plexus_preferred_customer.pdfIn PDF document text
    • https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_bb76f332b3f04ce89d83e066d1fae287.pdf?index=trueIn PDF document text
    • http://gelidug.epizy.com/curriculum_associates_llc_assessment_2_answers.pdfIn PDF document text
    • http://bolunivagoxel.epizy.com/cvs_caremark_appeal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/mifadi.pdfIn PDF document text
    • http://movebuze.epizy.com/wpf_treeview_binding_hierarchicaldatatemplate.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/radilodemesulavifuvovodub.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/86098493606.pdfIn PDF document text
    • http://gogujigasad.onlinewebshop.net/morihei_ueshiba_the_art_of_peace.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_off0000e5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DB 4244 bytes
SHA-256: 8c618fada78f20a478945e0f14272203bd047a5998252ee36568a8596ebe3e08
font_01_sfnt_off0000f4f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F1 5332 bytes
SHA-256: 977dd0fd3958f8d52d67aa43767a3c25da65d406e75a3f7bfd31095064aa31bd
font_02_sfnt_off0001070b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070B 11340 bytes
SHA-256: 08147976c2ae87b86b48faf236bde63c40359470f569610035e692f800effed1

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