Malicious PDF — malware analysis report

Static analysis result for SHA-256 27890835b88f0dc9…

MALICIOUS

PDF

72.7 KB Created: 2021-01-19 21:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0928201dcade964c85346bb15ee16035 SHA-1: 201b9e0b4d3e2ced9b5a1fa78b7759e1006f36cc SHA-256: 27890835b88f0dc906fea5d099dec64e70dd412bd47d27ade09ad31fc0da57db
174 Risk Score

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the embedded URL and the nature of the heuristics point towards a malicious document designed to exploit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://ggtraff.ru/wb?keyword=status%20video%20download%20hd%20whatsapp In PDF document text
    • https://cdn.sqhk.co/dikabopagesi/tYjiaJX/jabra_sound_app_store.pdfIn PDF document text
    • https://cdn.sqhk.co/satidaruxami/iiiiii1/battery_operated_candlesticks_halloween.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/g5hiqHh/64891291863.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/jfR5pja/zegiritogutovinelituxuwiw.pdfIn PDF document text
    • https://cdn.sqhk.co/firijanab/ahiXLgj/cruise_jobs_hiring_now.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/Z5UTXA9/music_mp3_song_download_english.pdfIn PDF document text
    • https://cdn.sqhk.co/supekolev/hirwVge/36465051342.pdfIn PDF document text
    • http://wegijezunulej.22web.org/assassin_s_creed_black_flag_game_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/YzhGYge/sowumel.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/gfhahc8/dwarven_forge_dungeon_of_doom_paint_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/qZDjbaq/wusejodufiwasev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafefelanepule.epizy.com/65253493928.pdfIn PDF document text
    • http://vuwejamadadodi.epizy.com/98231727710.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/82510643134.pdfIn PDF document text
    • http://moraruvotu.epizy.com/vlookup_between_two_sheets_excel.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_off0000e07e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE07E 5208 bytes
SHA-256: 1aad4d328181b122d7206a17dac90866faf175c6f0ee1ae2f4d0f787f2b40805
font_01_sfnt_off0000f247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF247 10076 bytes
SHA-256: 06862dcea7b7a57acf9914fa2dcf1c08a589524dd2e5fe9e4a7e676dc7863886

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