Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1fbbef24b3c1d9…

MALICIOUS

PDF

66.9 KB Created: 2020-12-27 19:00:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a51afbf30b5cb8dea43a62138a6b01da SHA-1: 781ce966104165cd4f1b193176e52b7e1d758eae SHA-256: ea1fbbef24b3c1d9bb08aa9e1f87c4be3b3a486eef48ac935c4401bb87c5480d
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious content. The document body, though heavily obfuscated, contains text suggesting it's a lure for a search query. An embedded URI points to a suspicious domain, likely intended to host a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/strik?utm_term=pizza+chef+andover+nh+hours PDF link annotation
    • https://wivirupi.weebly.com/uploads/1/3/4/6/134666213/veletikukigif_xirafumi_dunuruxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380079/normal_5f92aff0db5d1.pdfIn PDF document text
    • https://cdn.sqhk.co/jememobak/bjiEFij/airbnb_coupon_code_first_time_philippines.pdfIn PDF document text
    • https://cdn.sqhk.co/vatuliwa/gfCiegd/ultimate_motor_simulator_2019_wiki.pdfIn PDF document text
    • https://dunilugifesa.weebly.com/uploads/1/3/4/4/134471262/1985592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501214/normal_5fb92fc6a4e24.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/mipizaju/video_er_for_iphone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/jupojelejasu.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/sesapo.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/noodle_gorillaz_phase_3_mask.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/rasuwulujarulagokamipe.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/biostar_a780l3c_motherboard_drivers_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/64461663715.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_off0000c931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC931 5188 bytes
SHA-256: 3f9eeb76496c350a97023aa9e7421ad6e8850470868489036ad9846092d67aa3
font_01_sfnt_off0000dae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE5 10644 bytes
SHA-256: fd8a50fe03af8cf39b55de6504f0039ab063ecbb89a65dbb5c20522d32ffdcb8