Malicious PDF — malware analysis report

Static analysis result for SHA-256 89428a7c06c19165…

MALICIOUS

PDF

101.9 KB Created: 2021-01-17 11:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 42e91bfb4a10b27fa44569a2fd1650fe SHA-1: 05b08aaac47b8c9062b24bbccdde9716fd5b24f4 SHA-256: 89428a7c06c191658aea77c574238922d1d54e6450c57e55c0031b35e0a7f47e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, trafftec.ru, which is likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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://trafftec.ru/aws?utm_term=quran+recitation+app PDF link annotation
    • https://site-1250905.mozfiles.com/files/1250905/asrm_guidelines_for_ivf_lab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_5fd975709f872.pdfIn PDF document text
    • https://site-1178883.mozfiles.com/files/1178883/twister_des_moines_iowa_obituaries_3_day.pdfIn PDF document text
    • https://site-1176088.mozfiles.com/files/1176088/72318213922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f934df85d8ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420031/normal_5fa421207a0af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382972/normal_5fe08f3f059bd.pdfIn PDF document text
    • https://site-1176079.mozfiles.com/files/1176079/rivogokefosadigopemogezos.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/sepawi/answer_key_jee_mains_2019_10_january.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/plague_inc_apk_ios_free.pdfIn PDF document text
    • http://xewenofos.epizy.com/xezavedotenesataraz.pdfIn PDF document text
    • https://s3.amazonaws.com/savifin/non_extraditable_warrant_county_only.pdfIn PDF document text
    • http://nepunefetonub.epizy.com/anybody_can_dance_telugu_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/knowbe4_phish_alert_button_guide.pdfIn PDF document text
    • http://wipapirub.epizy.com/88028937234.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/vilekasozogedalu.pdfIn PDF document text
    • http://xujalupa.epizy.com/free_able_resume_templates_for_wordpad.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001528b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1528B 30644 bytes
SHA-256: d18c34ec475b27997d1c47f62c902746d2551e489cff2607d095d2e2c70f480a
font_00_sfnt_off00011069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11069 2948 bytes
SHA-256: ce96b12e9915ae00788165bdc898c8313e64b942c5fb2cd6e51536d4bdd2f265
font_01_sfnt_off00011aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AEE 4780 bytes
SHA-256: 8b606ab811865e7d15cdf539a3c56fc8d78fa92c072dc79a3365e85241706efa
font_02_sfnt_off00012b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B3D 11472 bytes
SHA-256: 185c31383fb2260921e1ce7604842a031a5ae734052c5b657e24c432d28a1845

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