Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1df005d2cb80d46…

MALICIOUS

PDF

73.4 KB Created: 2021-01-06 05:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c3ca4d96e298c46306ccb9b5f336c0f1 SHA-1: 9861613a1663f4253d97a7f1818cd426ab58a51a SHA-256: a1df005d2cb80d46cd0ca57a44b17cae562016ac2f3bbc4339a89a974185b6b7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/aws?utm_term=sheet+music+for+piano+disney+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366050/normal_5feafe27118d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470409/normal_5fae4f9444ff2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f94a9d045dfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_5fb8a81c2d270.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387806/normal_5fa442830faa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375207/normal_5fa8fe1f94399.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387924/normal_5fef522635f3a.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/farezelof/wastewater_engineering_treatment_and_resource_recovery_solution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be0e975-4820-4023-89a6-47794febd0a5/asus_rt_n12_d1_repeater_mode_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/tapetuwirenasofabimide.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/aetna_better_health_pa_form.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/13970563420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9aab80fb-15aa-4f0e-bdb3-e3a01dd29286/wedding_cakes_prices_and_pictures.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_off0000d2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DA 5624 bytes
SHA-256: e29a971e8c6f3eb661016cdb43992396098de90ca19e24ef390e9217a8b04bfa
font_01_sfnt_off0000e5d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D8 10736 bytes
SHA-256: 165976f1387ac282fbf0feb919bb04ed3dba1fd2aa6fae77701c1cbffc707e8c
font_02_sfnt_off00010a6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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