Malicious PDF — malware analysis report

Static analysis result for SHA-256 25088dc7d2554ffc…

MALICIOUS

PDF

75.3 KB Created: 2021-04-06 14:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a19cd2e3fcb82702a6ecedc4d0c9992c SHA-1: 8c92cf109349b87a85ae2810794553929c96ba4d SHA-256: 25088dc7d2554ffccaaeca67cfb0ea28487144a820a9eca9aad9c7da75e8fe98
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=ap+biology+membrane+function+pogil+answer+key PDF link annotation
    • http://pek-24.cc/73712320843ivsh1.pdfIn PDF document text
    • http://women-ita.space/vmware_horizon_client_for_chrome_version_4._78fea7.pdfIn PDF document text
    • http://msertis.xyz/wivifemiginuxifsr178.pdfIn PDF document text
    • http://purubifo.medianewsonline.com/how_to_pair_tp_link_extender_with_router.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://peguxukeziku.sportsontheweb.net/26193955480.pdfIn PDF document text
    • http://feyakast.online/philips_multigroom_3000_vs_7000bymef.pdfIn PDF document text
    • http://fugeduwugize.22web.org/vitipagiduxovelesokak.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/linodaxefijamigulabikog.pdfIn PDF document text
    • http://gagitevanonuti.mywebcommunity.org/dazojitomuxigotasowavigew.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/pozokimepe/watiniwabepigal.pdfIn PDF document text
    • http://fasemejatafa.rf.gd/acrobat_reader_10_free_italiano.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/metal_gear_solid_5_quiet_cosplay.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/quiet_by_susan_cain_chapter_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/atualizao_android_7._0.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/example_of_jinja2_template.pdfIn PDF document text
    • http://gesonumakokobal.rf.gd/febrile_seizure_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/15362978384.pdfIn PDF document text
    • http://jozobudesurarab.onlinewebshop.net/vavibixap.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/how_to_break_your_addiction_to_a_person_kindle.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_off0000e6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FD 5720 bytes
SHA-256: 677040e1ff37c8195954c75b821b7758579d4d881276ebd5e9f2f1a61d303775
font_01_sfnt_off0000fa84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA84 11204 bytes
SHA-256: 37ce2d331e0356953f4c6e769ebd0f8940067d6346d06987f010a6481311f193

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