Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ad06fe2e9c1c97…

MALICIOUS

PDF

82.2 KB Created: 2021-04-06 16:33:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a480f7855702ddf7a034043554e080f1 SHA-1: 27d918e225ee9427a82d2d19763a3b3f3aa6c765 SHA-256: e6ad06fe2e9c1c9767d05982abb1d9d7ed7101fc0e68e27f4ffe824ce34ba276
116 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical ClamAV detection and an ML classifier flagging it as a phishing trojan. The presence of an embedded URL pointing to 'golowaki.ru' strongly suggests a phishing attempt to redirect the user to a malicious site. While the document body is heavily obfuscated, the overall context points to a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://golowaki.ru/strik?utm_term=ergo+omni+360+positions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479675/normal_5fcedbc853a49.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/ifbWjb5/sheltered_definition_in_spanish.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/vjaohju/history_of_nigerian_musician_tekno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386337/normal_604501be841e0.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/cU0Fgla/ripivevoxixabesugusok.pdfIn PDF document text
    • https://cdn.sqhk.co/vixemujomu/Vig8Dfp/seda_hotel_bgc_events.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381735/normal_60029bbb0a959.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496815/normal_6023eea74fc2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486521/normal_5fd33f039226d.pdfIn PDF document text
    • https://cdn.sqhk.co/fematixub/hhxhi5k/ledorulop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_6043784ebf794.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/gezizefefififa/how_to_crochet_a_baby_blanket_with_thin_yarn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df548d03-0012-45f2-9a22-b764e18f4241/48259834443.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/descriptive_essay_example_about_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/047ddf9a-1eed-4218-a89e-400b9dc5b626/17177935828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14001790-fd67-4cfa-94f7-5f58f8b6d932/17172697653.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/nice_guidelines_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8f89886-95ed-49f9-80f2-85e0652a6b37/53311784569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a42ade-52be-4d24-915b-6b19179cd15a/coping_cat_ages.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/97788230415.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_off0000f501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF501 4984 bytes
SHA-256: fa5706caaf9dbfe7c74a1356119a79e7536431ea6653aa88d546b854acba6a4c
font_01_sfnt_off000105c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C5 11204 bytes
SHA-256: d60be41e288a3891a21b5c555642da150da4d2203fd909d75701b13a8727a692
font_02_sfnt_off00012bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BED 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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