Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc34fad3290211d…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 02:04:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0da1265ce259888669071bc91ce182a1 SHA-1: 95204a88298e48f87355f232273d733898b2ad2d SHA-256: ecc34fad3290211d78927e562c596eca26a2234d50174fadc7fc8168041130c2
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs point to external resources, suggesting a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains keywords related to search queries, reinforcing the lure. No scripts were extracted, but the PDF structure itself likely facilitates the redirection to malicious sites.

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://bologen.ru/wix?keyword=cualitativa+y+cuantitativa+ejemplos PDF link annotation
    • https://cdn.sqhk.co/rujiwujik/jahfAge/44047517056.pdfIn PDF document text
    • http://katipef.medianewsonline.com/rezosuriritisovike.pdfIn PDF document text
    • https://cdn.sqhk.co/febapaji/uicgfif/vinikipanubobo.pdfIn PDF document text
    • http://kanaxade.mygamesonline.org/tamosibebefuve.pdfIn PDF document text
    • http://kalidejomepajo.scienceontheweb.net/mixubibapimamogiso.pdfIn PDF document text
    • https://cdn.sqhk.co/rijatazuga/gEjbExi/virtual_dj_sampler_sound_effects.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/what_is_tqm_and_why_is_it_important.pdfIn PDF document text
    • http://nejurizedutopi.iblogger.org/how_to_clean_your_nespresso_vertuoline.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/kriya_yoga_practice_book.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/bisiku/kijuxobor.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/pagumapuraleronenutegol.pdfIn PDF document text
    • http://zebinagapovu.epizy.com/boom_beach_apk_apkpure.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/administration_job_titles_list.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/age_of_empires_1_gameplay.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/mimegul.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_off0000dc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5C 5128 bytes
SHA-256: 2804c30c80ab7acba71de9bd89ef6ce230f498922a3c8e452e66bd2cf178f4e1
font_01_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 10936 bytes
SHA-256: 862768a7b02b79864d46067b8426a3ca08ae733e19ceaaf658b65f832a3ce18f

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