Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b8cbe261800766…

MALICIOUS

PDF

166.8 KB Created: 2021-05-21 10:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8f5a7c8e0e48edf759ade45c23b59d1c SHA-1: cf98c3f71e4cb797dfe0a016d8b2010bb28f06ba SHA-256: 68b8cbe261800766ce7d7277791267796cae99185484d5cb17b5ce672de34102
96 Risk Score

Malware Insights

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

The PDF 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 used for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a book download, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=the+5th+wave+book+3+pdf+free+download PDF link annotation
    • https://luwujapi.weebly.com/uploads/1/3/4/7/134751522/7575f226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468819/normal_600325fd09976.pdfIn PDF document text
    • https://towizitubozabo.weebly.com/uploads/1/3/5/4/135400713/415e9e17f97d09.pdfIn PDF document text
    • https://dapasubasawesol.weebly.com/uploads/1/3/4/3/134383907/fomox-rodagurijaf-rimotawikizevep-jaludif.pdfIn PDF document text
    • https://tusujowifavenag.weebly.com/uploads/1/3/1/4/131453847/fawewefuvukuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475559/normal_600578d8777e6.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/4094388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419626/normal_6069fcd2ece42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413002/normal_5ff149a9279da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393625/normal_60296be8616d9.pdfIn PDF document text
    • https://gudaxukusakirip.weebly.com/uploads/1/3/4/0/134096244/jezub-xaveterumusapu.pdfIn PDF document text
    • https://tisizapotiw.weebly.com/uploads/1/3/0/7/130776245/5536343.pdfIn PDF document text
    • https://gitasojozatoj.weebly.com/uploads/1/3/0/9/130968906/6172319.pdfIn PDF document text
    • https://subamepowesita.weebly.com/uploads/1/3/4/8/134875458/vawagi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuwosil/29456464144.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/thoth_tarot_art_card_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/guwisilojexoledugamuduw.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/how_stars_appear_to_move_in_the_night_sky.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/409819f9-90d3-4cac-ac90-c3e2320b16b0/rijotelow.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/64192357428.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a10191-084a-4a52-ac49-024afd11d4b4/trigonometry_formula_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/self_introduction_letter_format_to_new_company.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_off0002526b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2526B 5544 bytes
SHA-256: 8bee6b5b9364916e14227a49c35fc7b0343242ef74a3a7d02981007a0f25e23c
font_01_sfnt_off0002655f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2655F 11808 bytes
SHA-256: 178d565ff90d654f17b77f20ce8c82ea14e264850f7bb2eac05f0a286cb4a67d

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