Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2048a340697060…

MALICIOUS

PDF

74.9 KB Created: 2020-12-27 02:58:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d94b7656c54ee2ce5ae352c2159c5a9c SHA-1: 72cadddb59a2e9b1d7a74d8033a03f9aff329dc5 SHA-256: be2048a340697060f2b724c342249bcd3182cafa6dee6f961e87e248a6d069dd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ggtraff.ru/strik?utm_term=ejen+ali+emergency+mod+apk+2020', is likely used to direct users to a phishing page or download malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=ejen+ali+emergency+mod+apk+2020 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4492593/normal_5fc9b9ddefab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f8749615242d.pdfIn PDF document text
    • https://cdn.sqhk.co/gagufatemo/jahit99/tripp_trapp_high_chair_baby_seat.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/jaA8AOQ/slice_and_dice_data_define.pdfIn PDF document text
    • https://cdn.sqhk.co/sukurorezib/8fQjhgh/lorumotafasilelumad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/322bd948-c58a-4a00-96ce-a4a8d8c8220c/xemoler.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/ayuno_intermitente_y_cetosis.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/lion_den_leader_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xugigabitulu/20665460300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a719f08-36d9-4ab5-ae50-8f4c372ce1a6/grundfos_super_selectric_ups_15-60_m.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/free_cfosspeed_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/upsc_cds_online_form_fill_up.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E1 5688 bytes
SHA-256: 9b6f2935ceb4574546124007fe317c9353ad904dd51717a850c2c07ef229dba4
font_01_sfnt_off0000e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 2376 bytes
SHA-256: 9e45056cb24fa8fee64b750f50df4388a7f683fcf41cc82f5c8fd04c1b9acc6a
font_02_sfnt_off0000eee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE5 16820 bytes
SHA-256: 3866589946e2816e63d61f469107d78266cf8b9a3a424317f4c7a56110350f8d