Malicious PDF — malware analysis report

Static analysis result for SHA-256 829eaf4bc53efe14…

MALICIOUS

PDF

79.4 KB Created: 2021-05-11 20:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a50477efc2aa900b98f2d7598ff9a97d SHA-1: 4e959ff7e7e2798ecbbf524b464fb1c200e8471f SHA-256: 829eaf4bc53efe14ea936e3472130eea412ffcb6017fdc0f19272352d280815b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://nipisod.ru/strik?utm_term=exam+questions+and+answers+in+business+law
    • https://lefoteliwe.weebly.com/uploads/1/3/4/0/134095852/5297fe.pdf
    • http://pifedalune.medianewsonline.com/ryobi_1700_psi_pressure_washer_price.pdf
    • http://xugaguf.mypressonline.com/kapuzanunasirubusurom.pdf
    • http://zabotokuke.iblogger.org/japanese_fashion_style_guide.pdf
    • https://koxizekeb.weebly.com/uploads/1/3/4/7/134770308/6614705.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://sudexixurijaxoz.atwebpages.com/communist_manifesto_book_report.pdf
    • https://s3.amazonaws.com/bulujono/92826505782.pdf
    • http://lamujep.rf.gd/wamedadutanu.pdf
    • https://s3.amazonaws.com/rivazixexuguri/bezamobeguxazuvulagumasa.pdf
    • http://jujobope.atwebpages.com/riesgo_electrico_argentina.pdf
    • https://s3.amazonaws.com/kisimujuk/radha_krishna_serial_bhajan.pdf
    • https://uploads.strikinglycdn.com/files/be2c0286-6899-47ab-beac-259d7ed18fbc/33256804882.pdf
    • https://uploads.strikinglycdn.com/files/b0a63d61-5d5b-4e09-93d0-e16b2812807e/51638961171.pdf
    • https://uploads.strikinglycdn.com/files/b5b8694d-6272-4065-a04d-0366e5118f05/vufenuxukij.pdf
    • http://dowexibagodi.epizy.com/73450416935.pdf
    • http://wajutomagavugaz.epizy.com/ma_challan_form_uos.pdf
    • https://uploads.strikinglycdn.com/files/02e94938-3c2f-429c-92a0-1b5a78742c3d/jilot.pdf
    • https://s3.amazonaws.com/satulibaren/36780533899.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e119.bin
eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4
pdf-font-stream PDF embedded font (sfnt) at offset 0xE119 2828 bytes
font_01_sfnt_off0000eb23.bin
655d8b645fe70530b9b4273af9c50b3c745a5a0195f8c95cc236ce76a1d78cc4
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB23 5236 bytes
font_02_sfnt_off0000fce8.bin
a40ec0ff060b8faf63023fcfee43f1d4cafdd29c30648dd96020fb06f8fb0aa9
pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE8 10748 bytes
font_03_sfnt_off00012193.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x12193 4324 bytes