Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2ca6835180057e…

MALICIOUS

PDF

86.1 KB Created: 2021-05-09 02:02:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b9d866eadac925d97188bde79e1f9110 SHA-1: 6b5f04b72d5432b4e2ef75ce734103b436199d4c SHA-256: de2ca6835180057e88f05c6daaf7e78cebdc47e04f2eddc2c46cb3ab5636aeb3
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as phishing-related by ClamAV. The 'SE_CALLBACK_LURE' heuristic indicates the document likely contains a phone number presented in a context designed to trick the user into calling, such as a fake service center. The embedded URL points to a domain associated with this lure, suggesting a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://seumenha.ru/strik?utm_term=kenmore+washer+service+center PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492593/normal_5fdc3b6766076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453914/normal_60518b62a70cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403276/normal_5fee00dd5dedc.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/PEggAjd/wavaligesapoxokor.pdfIn PDF document text
    • https://cdn.sqhk.co/sarowojep/f5TWCge/dasusejukax.pdfIn PDF document text
    • https://cdn.sqhk.co/tamupoto/bgjicjL/gupebikojajexuxigatuvegas.pdfIn PDF document text
    • https://cdn.sqhk.co/lukumuzu/9Z6LSw4/19436253892.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418185/normal_5fe0ddf1cfc47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427103/normal_601d5403099cf.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokonabat/QXghW1I/instagram_search_history_view.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/r8icjY3/pbs_video_app_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/bexuxoxabim/D2z1ia0/hole._io_unblocked_games_at_school.pdfIn PDF document text
    • http://vujenixuwo.mypressonline.com/sulutif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wazipegemezen.atwebpages.com/a_level_biology_textbook_aqa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e581df2d-f2ca-470f-bb26-b6780b3120a3/pioneer_avh-200ex_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/zoxakuretegumezeretikal.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/80056783798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19ab21f8-237b-4a3e-835e-dcad913f690f/wetakimozejalurugugidedut.pdfIn PDF document text
    • https://s3.amazonaws.com/xulikamul/japogekegutelotosax.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/virimetarojito.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/60321061978.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11176 5128 bytes
SHA-256: d42c9fbf9099590b97d4f0c158b2572f113bd7b5cebc63f2ddb4f428b69d7745
font_01_sfnt_off000122da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122DA 11708 bytes
SHA-256: bb8e718f0488c7d9227d2a4e6092b235e2fa46f84ddde1693dcd5e85c09e1b79

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