Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b4c4ff84251aec…

MALICIOUS

PDF

212.2 KB Created: 2020-12-15 12:29:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8e98a0498b7169d2042a829a1d5ac952 SHA-1: 9a06a8aa276840b84089ff314b14790c8160b47a SHA-256: 97b4c4ff84251aecf6f596a115a7f03c1ad229e42a96fdda51097f162e591c8c
104 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by a ML classifier and ClamAV, indicating a phishing or trojan threat. The heuristic 'SE_INVOICE_LURE' suggests the document's content is designed to deceive the user into clicking a link, likely for financial gain or to download a payload. The embedded URL 'https://trafftec.ru/123?utm_term=isaiah+43+18+esv' is the primary indicator of compromise, likely leading to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8047

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://trafftec.ru/123?utm_term=isaiah+43+18+esv PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4454811/normal_5fc80bdbcc365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481408/normal_5fb4db0e54e0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481821/normal_5fa82598a5b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483837/normal_5fd84dd095b84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414672/normal_5fce9e3a89db8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499622/normal_5fad7bc163d7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5fb869a5a0425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5fb640dd26908.pdfIn PDF document text
    • http://www.opentle.orgIn 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://uploads.strikinglycdn.com/files/226ce334-fe60-4c22-9bbc-60fa82c00779/giordano_bikes_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69f3271-ec56-455c-95f1-e88307eec838/60355068336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3d7ed1-d192-47f3-9421-257d2ce4b0c2/anna_isd_schoology_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/287a1c73-e41c-484e-b28a-fb1ed564da85/spore_patch_5.1_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/victoria_s_secret_offer_codes_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d4f5dce-62e0-43b6-b4e3-5ff75016a1f4/kudoxozoniwinaxex.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/98803066298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6edefa1d-3f0c-4221-bf2b-acf6f35cb6db/jazezevifokex.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0002bd5e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BD5E 15940 bytes
SHA-256: e52ec3aebfc656393a75f90a42146f79120f8472b8c9aa1a4553c886145ed996
font_00_sfnt_off0002a30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A30D 2976 bytes
SHA-256: 96315f4005d3b97dd6949103e4905c85a2a4d42057c5b925cd2dc595bebd3768
font_01_sfnt_off0002adb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADB2 4632 bytes
SHA-256: e31fe76004e15c55085f6a2676bbf7287f46b792ace753af132fbd84397429e6
font_03_sfnt_off0002e8ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E8CE 18056 bytes
SHA-256: f5d76df938d660eace1c4e7a8ba337381348d8e8704f35b2d139dde0824c2e35
font_04_sfnt_off00031e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E74 16160 bytes
SHA-256: 25b72850130e910030014862537ab904e9861f8d26aa1d26c7a6983cc81afd8b
font_05_sfnt_off0003338f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3338F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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