Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8e3b0ee80aa477…

MALICIOUS

PDF

76.3 KB Created: 2021-02-18 16:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 58ae99c8cf5f40de19f1115cb60be7f8 SHA-1: 3f32320fcd5e31efe1ba7212446c751186beffa6 SHA-256: ad8e3b0ee80aa47703e8893915b33d7199e85235a7e71349238d6267d3a0d00a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when clicked, leads to a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=how+to+read+apk+files+in+mac PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4488822/normal_5feb6d79742dd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411917/normal_600744687279a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407777/normal_5fcbd90007537.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378856/normal_5ff911982a0b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481173/normal_5fcdac7669e85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_601d7534c0948.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412758/normal_5ff415397beb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459941/normal_5ff889a58c42c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_602e01dcb82c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412996/normal_5fe74eafe67e7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/potofaw/musesuruwejebilesokuxaja.pdfIn PDF document text
    • http://sonazawokog.rf.gd/california_residential_lease_extension_agreement.pdfIn PDF document text
    • http://xiramubete.rf.gd/dnd_5e_warlock_patron_great_old_one.pdfIn PDF document text
    • http://notijopozij.epizy.com/movie_box_app_apk_file.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/facebook_lite_marketplace_apk.pdfIn PDF document text
    • http://dedetepejoxele.epizy.com/preposition_worksheets_for_esl_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/16898537276.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12A 5204 bytes
SHA-256: b17c640e5f3dea81700eb9fab35913797ad69d3d2fd3f809a2dc2391e02b8a66
font_01_sfnt_off0000f2cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CD 10240 bytes
SHA-256: 86057caed23485c551279566e0e4cffd49b614dfb6485c8f508340da42d2d806
font_02_sfnt_off000115e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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