Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ebc8994858beaa…

MALICIOUS

PDF

78.8 KB Created: 2021-01-06 20:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8696cb96cf69027f95903833fae36a2e SHA-1: 586b5ac4ca27443719976c0b11d3244d91bd6185 SHA-256: 88ebc8994858beaa0a126b5024b55cf050a21c19f71fab0dfc845a5cdb44c7e4
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafffe.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains strings related to file downloads and potentially misleading content, supporting a phishing or malware lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/aws?utm_term=filmy+wap.+com+2018+bollywood+movies PDF link annotation
    • https://cdn.sqhk.co/gadukupuwe/6aLAgh6/photo_warp_apple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376609/normal_5fe077e0b0653.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/jcC3Mig/27106398036.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/41797608231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/297204bb-49b5-44ad-90eb-740298acfcd0/xupemab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c186c6-2e41-4303-94a9-38902aa35a0a/7538885966.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/kbc_live_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/kisulumetu.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/bibliography_apa_format_citing_a_website.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1116157-5ae3-458b-875f-a26b50235b9f/60328379264.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/roland_barthes_mythologies_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6d942ea-ee3e-4859-9f2b-277618100292/academy_at_lincoln_staff.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/70229019526.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/1_prop_z_interval_calculator.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C1 6024 bytes
SHA-256: 9740c8729d19e365b1e2d3bac2d40628b1d6151c0220a67d8538644855035c20
font_01_sfnt_off0000e84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84D 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000f3b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B0 10508 bytes
SHA-256: aaa68864ceb273e115eff3d999469fe15a15573b301ff5b55f6bcb2f6f723340
font_03_sfnt_off00011808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11808 6332 bytes
SHA-256: e6e3034b5e96bccb43fe7ea070d856e6bce9fffc4bfc1e8302117f6096d6e67b

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