Malicious PDF — malware analysis report

Static analysis result for SHA-256 1784aefdeae814f9…

MALICIOUS

PDF

153.1 KB Created: 2021-05-20 15:50:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: dcb3c39e6bef61c6f86e60066cc7719b SHA-1: d2127aacb7dc36aec5ac7960f3ba56185c044332 SHA-256: 1784aefdeae814f9facfba2a7dd0f7de030f9e0c24de8ae2b4b4c6a32052bee4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that leads to a suspicious domain, likely intended to host malicious content or redirect the user to a phishing site. No scripts were extracted, but the presence of an external URI and the overall malicious verdict strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=how+to+do+conservation+of+momentum+problems PDF link annotation
    • https://zolotamazuragif.weebly.com/uploads/1/3/2/7/132712333/sofojamabegegolav.pdfIn PDF document text
    • https://gilepijojuju.weebly.com/uploads/1/3/2/7/132740412/wesagedinil-nivaveso.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/5459074.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370278/normal_601b7646ed063.pdfIn PDF document text
    • https://kebonipima.weebly.com/uploads/1/3/0/7/130740513/4075053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_606747e851d55.pdfIn PDF document text
    • https://lixevipilevorox.weebly.com/uploads/1/3/4/6/134634278/watetuvamikitakuwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457008/normal_5fec95201c428.pdfIn PDF document text
    • https://vunakeba.weebly.com/uploads/1/3/4/6/134623580/9807772.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416502/normal_603ecfdab8f18.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/8965118.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382620/normal_60344e9e13409.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403541/normal_60072ae83984e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_6034c9b0df97a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/muxegeza/hamilton_beach_countertop_oven_with_convection__rotisserie.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/67610786450.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/how_to_draw_a_womans_face_shape.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/how_to_report_2x2_anova_results_apa.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/juwijuwekepukud.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/lazum.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/34847555865.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/how_to_say_orange_juice_in_mandarin.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/avicii_tough_love_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/18385708857.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001ef06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EF06 5436 bytes
SHA-256: ff0d4d1f86c720d0a3665f10497e54848c62f521d4d992954f0685864dddd1bb
font_01_sfnt_off00020172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20172 14412 bytes
SHA-256: b3ee182ce90ea9b6a2b018b22b4c01312b0b931989ecba56c9412931023a2c29
font_02_sfnt_off000231f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x231F3 16308 bytes
SHA-256: 97678349ba382d40953e3e4b314fa09a6c176c6eb9077dab28a00962894e18a8
font_03_sfnt_off000247d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x247D3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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