Malicious PDF — malware analysis report

Static analysis result for SHA-256 b52279ac292dad82…

MALICIOUS

PDF

72.4 KB Created: 2021-02-14 04:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e197530802fa4e8f4fa020d98282b53 SHA-1: 273ff59fc88f01d19b180f3b432a7e95d65708e2 SHA-256: b52279ac292dad8236621b34f7c1cf838215704cb44a3f85480de1c4301676cf
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=age+up+sims+4
    • https://static.s123-cdn-static.com/uploads/4375700/normal_5feb8e2517b7e.pdf
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/70cd152.pdf
    • http://fruitnaturs.space/where_can_i_watch_jersey_shore_season_3_online_for_freecafct.pdf
    • http://iminn.ru/guardar_fotos_de_whatsapp_en_galeria_androidjhc6i.pdf
    • https://cdn.sqhk.co/rovifatira/gejaGgh/pixel_force_halo.pdf
    • https://wugepugozufov.weebly.com/uploads/1/3/4/7/134744675/lepatufan-rubavuguki-xotuz-zejobunetos.pdf
    • https://cdn.sqhk.co/novigigexuxo/jcjbigI/moruwufanid.pdf
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fd065d8de5da.pdf
    • https://fuwidomanajano.weebly.com/uploads/1/3/0/8/130874101/nizawivajuwad.pdf
    • http://romeital.space/how_to_crack_the_ielts_speaking_test_part_1_downloadiek1i.pdf
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5fdb02863576e.pdf
    • https://nikubasixuza.weebly.com/uploads/1/3/0/7/130738960/577076.pdf
    • https://static.s123-cdn-static.com/uploads/4454164/normal_60021a60c4bfa.pdf
    • https://cdn.sqhk.co/mojobugoge/gjBNaja/vukid.pdf
    • https://cdn.sqhk.co/duzupafuj/tDhhdhc/zapuralevolopej.pdf
    • https://cdn.sqhk.co/rodesedaded/Ijhgdhb/bein_sports_channel_number_in_airtel_dth.pdf
    • https://static.s123-cdn-static.com/uploads/4466154/normal_5fd072641bf9e.pdf
    • https://cdn-cms.f-static.net/uploads/4448551/normal_5fd9e4a0a676a.pdf
    • http://apparently-home.com/897756100978qsao.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1f6.bin
6785fac8e87e68d90c5daf1eb0598645d71c6a39d559b14b64ac6f905097410a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F6 4876 bytes
font_01_sfnt_off0000f291.bin
3d8a0b39c5c135f4b35c3b5a02a025ab9dad4f871f2d805f8994f64bef98d60b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF291 9932 bytes