Malicious PDF — malware analysis report

Static analysis result for SHA-256 c19b592e9072e52a…

MALICIOUS

PDF

82.0 KB Created: 2021-03-11 04:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 157eba1a4dcfe0e0caa841b13e6b0bb1 SHA-1: d10672caec9e985b7bac046bfbeecc2b5130364a SHA-256: c19b592e9072e52a1c99a6ecd711b0f80ba183dc0740072b10e7e0541dddd155
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'zajinet.ru', which is presented as a search result for car parts, a common lure for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://zajinet.ru/strik?utm_term=how+much+is+a+new+engine+for+a+2013+chevy+equinox PDF link annotation
    • http://autoport76.online/battlefield_4_crackwatch057le.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/pazizerixawimigawusexime.pdfIn PDF document text
    • http://gejesixave.scienceontheweb.net/57558309997.pdfIn PDF document text
    • http://instapodarok.site/wakeditadolafush04v2.pdfIn PDF document text
    • http://francobusiness.com/biografie_mihai_eminescu0tyto.pdfIn PDF document text
    • http://mini-cam2.club/foundations_in_microbiology_10th_edition_test_bank_freed2npg.pdfIn PDF document text
    • http://emmetrix.net/robijiloxobitegejoraviru4lek3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/los_5_lenguajes_del_amor_download.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/lezifemusutu.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/vupalelex.pdfIn PDF document text
    • http://tevefetilojas.atwebpages.com/simple_list_of_irregular_verbs_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46fba452-c27a-430f-a144-deca9841aa47/the_innovators_dna_harvard_business_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/arlee_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/rilegakonevukagizefojemo.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/cisco_2960x_ios_upgrade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/takateg/animation_nodes_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/xiritata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a0e66e7-af22-47bd-a1f6-663682443607/98214181384.pdfIn PDF document text
    • http://madigekole.onlinewebshop.net/99370423866.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/039ab706-7d2d-4c0b-8ed8-1adedc445fb6/howls_moving_castle_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/what_books_are_good_for_12_year_olds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a05e714f-5d8d-4dd3-b379-c5e505f4053b/kanamupunal.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/96511625968.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/544688038.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/do_moon_signs_change.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/cobra_29_nw_ltd_classic_antenna_light.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_off000100bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 6160 bytes
SHA-256: 868e48f7c0f8a07e7249190ea01c5ce7fc740125f1b4d6dd0db3b4b08d076c0a
font_01_sfnt_off000115ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115AD 10696 bytes
SHA-256: 2f8182073d83af30536bd30281a5b6d6b9900cef87aac7673371a88896af837e

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