Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e281e170bf4a66…

MALICIOUS

PDF

150.4 KB Created: 2021-05-13 01:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0d32e4b6fbdc01282562585e8cdbd672 SHA-1: 3c20e126964445d701d137a14fab9eb6856501c1 SHA-256: f0e281e170bf4a6607d2b94dd21066a33c2a15926bd5f39dd11f4ccab9b350de
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'bologen.ru', which is likely used for phishing or to download a secondary payload. The document body, though partially corrupted, suggests a lure related to the film 'Pelicula 100 a 0s de soledad'. No scripts were extracted, but the presence of multiple external URLs and the malicious verdict strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=pelicula+100+a%25C3%25B1os+de+soledad PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473064/normal_5feee59b14f43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484364/normal_5ff784a827e4b.pdfIn PDF document text
    • http://paksorond.xyz/cqc_inspection_reports_domiciliary_carenfs0n.pdfIn PDF document text
    • http://yesnutural.space/xudekusuwevifenudufogotaoyfq5.pdfIn PDF document text
    • http://form-lnstagramverifiedbadges.com/64904956763pexdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380694/normal_6063f9462d3a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445570/normal_60369732b6630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_6017c528ca3fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_6038bb6a3cdb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460460/normal_60171657c1cd0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zonebon/lawosokarijinolozok.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_ad70aa5eead946af886908d33e264d86.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/noganesidukarifajusude.pdfIn PDF document text
    • https://0315d410-4255-45a3-9477-873949dd02ac.filesusr.com/ugd/f85006_0640c732a7214577a420c306a882e99b.pdf?index=trueIn PDF document text
    • https://d09251a9-b09e-4077-8ccb-24037f005f7b.filesusr.com/ugd/a6ce17_364564a2b23f4404bca6ac99885b813c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vipinib/mc6_jumpmaster_study_guide.pdfIn PDF document text
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_bf057db46d284473b293c2751e8d39c9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vebisop/suzuki_bandit_1250_workshop_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/nuxomuwiduxadekotawo.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_off00020fbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20FBC 5244 bytes
SHA-256: 22fd969b78fcc7f3cb2cfcd04edd0a48326a6e8c837e5ce5dcfc576644e74c9f
font_01_sfnt_off00022168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22168 12676 bytes
SHA-256: 7431c05de55b62dd5115c34315f51859799481bda84f9d0e4363ec28cb22e235

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