Malicious PDF — malware analysis report

Static analysis result for SHA-256 080725b0cce3a1a1…

MALICIOUS

PDF

74.8 KB Created: 2021-03-11 02:57:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b44e2d498edbb6ef7bb1c7189a9f2b0d SHA-1: e746c051c234927b643aa5ed52611fce77f09088 SHA-256: 080725b0cce3a1a18501da3af82e02c81ce7d9e035c3caa5b01cbdcb1b8d81dc
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically referencing an 'award' and 'artificial intelligence tutorial', suggesting a phishing or social engineering lure. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the nature of the heuristics point towards a phishing document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://golowaki.ru/award?keyword=artificial+intelligence+tutorial+ppt+pdf
    • http://zeropium.com/71842127511yurm2.pdf
    • https://dagazafija.weebly.com/uploads/1/3/1/4/131484603/xanazosa-nimaworajad-wozewezatenu.pdf
    • http://1xbets-reg.site/what_brand_of_shop_vac_is_bestt8bdu.pdf
    • https://cdn-cms.f-static.net/uploads/4417805/normal_60251a458f63d.pdf
    • https://pudijeda.weebly.com/uploads/1/3/4/5/134586696/4988143.pdf
    • http://prizinsta.online/how_to_check_vif_in_pythonjk5x8.pdf
    • http://verifiedbadge-lnstagram.com/maberaxugeztdycw.pdf
    • http://test123test.xyz/car_driving_games_for_pc_free_downloadwcxev.pdf
    • https://static.s123-cdn-static.com/uploads/4465277/normal_600903bd8c6aa.pdf
    • http://mirijesuwakug.sportsontheweb.net/xaxefuvuxifamaveguvunudod.pdf
    • http://cheeronthemove.store/who_makes_tappan_appliancesjigod.pdf
    • http://swiss-gear.shop/how_to_reply_to_a_5_star_reviewfb126.pdf
    • http://pobesegu.scienceontheweb.net/administracion_de_medicamentos_via_oftalmica_procedimiento.pdf
    • http://zitupow.medianewsonline.com/8863467630.pdf
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5fe8450ff3f3b.pdf
    • https://static.s123-cdn-static.com/uploads/4365656/normal_6001c05163bc3.pdf
    • https://rajotabew.weebly.com/uploads/1/3/4/3/134360909/9961544.pdf
    • http://air-calm2.club/angai_geet_marathi_lyricstoh57.pdf
    • http://natur-bio.space/sijiprc6r4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rawesaragegugar/tifavoma.pdf
    • https://s3.amazonaws.com/mizeteb/initial_environmental_examination_report_philippines.pdf
    • http://satawakerexe.atwebpages.com/xodezazepew.pdf
    • http://wulibazosuxib.onlinewebshop.net/sharepoint_designer_2013_end_of_life.pdf
    • https://s3.amazonaws.com/nuselufuzo/intermittent_fasting_guide_free.pdf
    • https://s3.amazonaws.com/rolefosiju/63201704014.pdf
    • https://s3.amazonaws.com/wuniku/sevefojijeduzuniwireluz.pdf
    • 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_off0000e80b.bin
e1bb0f39e730e1e710a4b73144f3d269cadad389e5b9b961512404675c9476d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80B 5136 bytes
font_01_sfnt_off0000f992.bin
ed30aa4a8f3cbe3a00efe96e05d2b3fcbae469a26ea115fde0b9576a7c88a948		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF992 10532 bytes

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