Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d11f68f62f1ecdc…

MALICIOUS

PDF

74.8 KB Created: 2021-03-06 17:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7e0b5d9c4e7b1b9b00e80390af571cf0 SHA-1: 1ea4b6477a9e499fe7f93ae032117bdeba1bb091 SHA-256: 7d11f68f62f1ecdc24217d0d1d707e9e705b492241e4a0ac0553fe87166a1882
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though partially corrupted, suggests an attempt to disguise the malicious content with educational keywords.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/wix?keyword=compare+and+order+fractions+and+decimals+go+math PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4382771/normal_5ffbcd90d4cb5.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/radio_thermostat_ct50_battery_replacement.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409417/normal_5fe235462e606.pdfIn PDF document text
    • https://fifekususelamib.weebly.com/uploads/1/3/5/3/135349053/vikivavomi.pdfIn PDF document text
    • https://telejifuzi.weebly.com/uploads/1/3/5/3/135313468/9682890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412778/normal_5fddcaec74c9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_602dd7f4365f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5fd890bf5f34d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385435/normal_603762f1be0b3.pdfIn PDF document text
    • http://lozomaneje.getenjoyment.net/hp_officejet_pro_6835_printer_driver_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_60392716e431b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_602cac93cc856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411714/normal_5fe1548fd85a5.pdfIn PDF document text
    • https://fedonofawok.weebly.com/uploads/1/3/4/8/134881994/3131461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372378/normal_5ff15ab3be9be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ketabigumowun.atwebpages.com/zixowosurer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/401c6ec4-ac03-4f97-a331-72233ac9376e/does_diamonds_go_up_in_value.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3da53064-5fa5-427d-908a-e5cc56261677/aces_of_the_luftwaffe_squadron_bosses.pdfIn PDF document text
    • http://gizixaxeviduf.myartsonline.com/skyrim_mod_vampire_armor_retexture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22217383-c334-4a61-97f6-a78d6bbcdb49/optimal_health_diet_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f72f418-ac4b-415b-b539-279b1b236b6a/84554444326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aed8fd8-8118-4c9b-b743-e7c529c0bd51/joxemasixamasarewato.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_off0000e77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77A 5476 bytes
SHA-256: c9b16e49055c5c3530b494fcb83c37be7546ec24e70ddee8a4daf85d81f6805d
font_01_sfnt_off0000f9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E6 10428 bytes
SHA-256: fc30b9fc6da32fa4a7633f3f2e5b96aacb7d065c0c4ca77e37a78ff853a914d9

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