Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ea2b9bf5c4e40d…

MALICIOUS

PDF

79.1 KB Created: 2021-03-15 01:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 50b58b603d71e6eacae9605b2534f8dd SHA-1: a46c14828b0b58764ec9d6818d7cebfca8ffc4d3 SHA-256: b7ea2b9bf5c4e40d73102c4959f355f2cc0f6a28304a12f9b8e5d5df320aba81
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL `https://lozipotod.ru/strik?utm_term=serta+motion+essentials+iii+full+adjustable+base` suggests a phishing lure related to office furniture. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt, likely leveraging a PDF exploit or social engineering.

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://lozipotod.ru/strik?utm_term=serta+motion+essentials+iii+full+adjustable+base PDF link annotation
    • https://cdn.sqhk.co/sinemajud/v1Qhigd/zombie_street_fighter.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485162/normal_602d6b799c7ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465274/normal_5fcf51ba2fba1.pdfIn PDF document text
    • http://zumanidoxup.medianewsonline.com/alaska_constitution.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5fec9d07f40dc.pdfIn PDF document text
    • https://sevisexabokiro.weebly.com/uploads/1/3/1/6/131637038/e83654ab.pdfIn PDF document text
    • https://xevomixu.weebly.com/uploads/1/3/0/7/130776485/4409441.pdfIn PDF document text
    • http://nejevefivi.mypressonline.com/tasco_game_camera_not_working.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455406/normal_5ff309c2ae77f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427076/normal_5fdf2fb6838e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386337/normal_5fe825959234f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454167/normal_60340ea6bed52.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376621/normal_60013f993b3c5.pdfIn PDF document text
    • https://cdn.sqhk.co/fukaxaxod/ggRhggM/99795566781.pdfIn PDF document text
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/896f087d6.pdfIn PDF document text
    • https://xagixuruzetel.weebly.com/uploads/1/3/4/3/134319769/704015.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd57dc0f-739e-422a-9d1e-da09c346ecfd/57935701954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d970a51-d716-44af-8650-08b24f0de6f8/usps_online_customs_form_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e043597-2b07-420c-994e-20e847625e22/diana_palmer_book_list_with_summary.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/the_raven_cycle_book_1_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4768f87-f584-48dc-8a3f-9e367d8e632d/super_mario_sunshine_2d_download_apk.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_off0000f1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DC 5372 bytes
SHA-256: 087d8a4ef29e65767cd9f041a88e9b52d597ace906809b1310a0646780d5931d
font_01_sfnt_off00010407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10407 12120 bytes
SHA-256: 82d1945dc4ca76704e43379df1be4541df84b9cd119fce395fe33e8a2385960d

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