Malicious PDF — malware analysis report

Static analysis result for SHA-256 1621c15760e7fd61…

MALICIOUS

PDF

92.7 KB Created: 2021-03-28 05:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8d5fb063993e64799aeb35b5f612fb14 SHA-1: fa6cc1416a60704786a3654ceeb5f56b6b5230c2 SHA-256: 1621c15760e7fd610902282c82e7791c04d4c04131080c55c33258b7fe0c277b
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a malicious domain, likely intended to deliver a phishing lure or malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a failed attempt to disguise the PDF's true purpose as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=anna+karenina+pdf+bangla PDF link annotation
    • https://cdn.sqhk.co/ruvonusebex/nKjfghy/j2me_loader_pro_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_602a1726989bf.pdfIn PDF document text
    • https://cdn.sqhk.co/nexasolonit/gjoxIje/endless_ducker_dude_perfect.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402724/normal_601b99919b42c.pdfIn PDF document text
    • https://maxanijalezo.weebly.com/uploads/1/3/2/3/132303118/neragozod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_5fe7a3ef7363d.pdfIn PDF document text
    • https://cdn.sqhk.co/lexebogefaj/sjiYiaw/zebitofam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5fdc184e4363a.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/5yNjdjb/levagowisajekulego.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426960/normal_5ffdf1a0ba46a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465564/normal_602be15b5342e.pdfIn PDF document text
    • https://sikalejewop.weebly.com/uploads/1/3/5/3/135341852/zekizigorelagin.pdfIn PDF document text
    • https://cdn.sqhk.co/vegedusovo/H5esieP/lamiglowka_amaze_cube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384822/normal_603431ad0303e.pdfIn PDF document text
    • https://cdn.sqhk.co/zenegiwowi/ijdviha/monster_girl_maker_2_for_pc.pdfIn PDF document text
    • https://zopofaxomape.weebly.com/uploads/1/3/4/3/134372760/9a5afd3ec34f3.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/206e1ae3-a106-44b3-b142-ededd2f6f519/how_do_you_disable_a_viper_car_alarm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaef6e26-f1d6-44dd-a828-4f497b43fc47/18755670321.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2064a955-80c1-47c8-a87f-6a82b1fb63cf/dabuma.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C0 5224 bytes
SHA-256: 3c32bfe82310fdfeeef6df37af86fceb83ffbc747e3b84f5abc2cff06de70932
font_01_sfnt_off00010897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10897 18364 bytes
SHA-256: 78bc38c139884a7b3d90b8a149ba6d0a7a431ec07f45da7e97c4d31d13121881
font_02_sfnt_off00013ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE7 10944 bytes
SHA-256: f39f659b5d6a716b696a26ea481a581b198a9d710270cda110e1a5fd12383a92

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