Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e043bd3740707c…

MALICIOUS

PDF

78.2 KB Created: 2021-04-06 08:00:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b586501873813a732619cc4934b247a0 SHA-1: 46460e690098be43d48458298474e737f9b62c6d SHA-256: 69e043bd3740707cfdc4f49a9c8f74e49855f161477c1aa27de95445b61c442a
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains multiple embedded URLs, with at least one, https://zajinet.ru/aws?utm_term=resumen+del+capitulo+2+de+el+hombre+mas+rico+de+babilonia+pdf, appearing to be a lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, further supporting a malicious intent.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://zajinet.ru/aws?utm_term=resumen+del+capitulo+2+de+el+hombre+mas+rico+de+babilonia+pdf PDF link annotation
    • http://kompledom.com/what_are_different_types_of_psychological_disorders7s1vd.pdfIn PDF document text
    • https://jedifubebevaze.weebly.com/uploads/1/3/4/8/134873515/kujimelafebutar.pdfIn PDF document text
    • http://leomannapov.com/13433046980j0dcx.pdfIn PDF document text
    • https://lolijizaw.weebly.com/uploads/1/3/4/4/134461821/6814171.pdfIn PDF document text
    • https://gitasojozatoj.weebly.com/uploads/1/3/0/9/130968906/roduzuru_danunalere_jixofinaviku_titovok.pdfIn PDF document text
    • https://semumivotuwebaz.weebly.com/uploads/1/3/4/3/134379403/rowubu-dajejaniwixesa-dosamixokoras-wavizilexuturiz.pdfIn PDF document text
    • http://maykistore.ru/troy_bilt_tuffy_tiller_carburetor_adjustment7v5c4.pdfIn PDF document text
    • http://marudibiwel.iblogger.org/tejunonolejowamidet.pdfIn PDF document text
    • http://mangalvpodarok.ru/how_to_cook_pork_roast_in_a_pressure_cookerktbzg.pdfIn PDF document text
    • https://jubezotezuwu.weebly.com/uploads/1/3/4/4/134476040/firewajixegusas.pdfIn PDF document text
    • http://christmas-gift.ru/risupupopadiwubavibewepi5e9t1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buzeliri.rf.gd/42892018437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7a463f7-1773-40a3-8f3e-16d861af872a/biwovikugevalejumaxajifak.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/dudabugebezapo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d09db99-d3ea-40e9-98e2-5f4cf5bc3f23/gadani.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/ayyappa_video_songs_dj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb90c14e-28c8-46f9-b3c9-901dfe99591a/napetiperu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15229374-2ee6-4113-95df-b0023e2e702b/susan_sontag_on_photography_chapter_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/adobe_flash_player_cs6_free_trial.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/kurogoxesi.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_off0000eff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF4 5676 bytes
SHA-256: 351ae61c1b0e4d0edd448b516c5fea22b4f3f6caeb070416217ff65c0a8e7912
font_01_sfnt_off00010311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10311 11784 bytes
SHA-256: 585f34f9e3787fd523be23d20ca32f4d8b0ea5771e12a6df30309273968ca355

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