Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1293b9a0bc5b056…

MALICIOUS

PDF

88.2 KB Created: 2021-02-20 04:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1f4b860fcc5383c8b5742ad0c9852183 SHA-1: e5ecfda9f1de451dc422798e7b2aa17071bcd2bd SHA-256: b1293b9a0bc5b05684647634f240bf5d17b70f9dc938d8bd377312fae539f3c8
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be a lure related to a common search query, suggesting a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/strik?utm_term=why+is+my+whirlpool+water+softener+overflowing PDF link annotation
    • http://debakabuxaw.22web.org/piriformis_syndrome_worse_when_walking.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391314/normal_5fe85633233e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446776/normal_60048da5d60ae.pdfIn PDF document text
    • http://boviriso.22web.org/what_is_the_latest_kindle_fire_model.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391621/normal_601f868741b44.pdfIn PDF document text
    • http://adanakebap.org/hello_neighbor_hide_and_seek_act_1_ps4prdyt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410432/normal_5ff8539e03e54.pdfIn PDF document text
    • http://rkconstructionsucks.com/ejercicios_de_trigonometra_1_bachillerato8okn8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_600c9a6b6b0fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389601/normal_5ff617f4b5846.pdfIn PDF document text
    • http://center-san.ru/rifodavovo67r6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417806/normal_5fe0a59c4db5b.pdfIn PDF document text
    • https://cdn.sqhk.co/xumifutave/hejfhaB/tamil_nursery_rhymes_mp3_free_download_for_mobile.pdfIn PDF document text
    • http://nowofuguvinidaw.iblogger.org/xamedutubiwe.pdfIn PDF document text
    • http://jofijuke.22web.org/dokubisuvukefejagifa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372076/normal_600854c26e98e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vaxutusurinav.epizy.com/alejandro_magno_biografia.pdfIn PDF document text
    • http://vemevusakeke.epizy.com/35398397611.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_off00011c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C7E 5584 bytes
SHA-256: 9a49faa43de2247641857ee2647ce1e370af3119903c3666bdfe3c062c7fc238
font_01_sfnt_off00012f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F78 10408 bytes
SHA-256: 026bb5ed54aa1f2d71210463d3a86c273488cc77bbb6a0c10afc50244f939a04

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