Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20ce29c2dfc9242…

MALICIOUS

PDF

74.8 KB Created: 2020-12-26 05:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ada39accf1e8fd40827cf96cf3f12253 SHA-1: 18162fc65d5ab7bd2a0ea941fbdeaeb7c5dff542 SHA-256: c20ce29c2dfc92424617fb41e8fc87b870a22e16723c07ac9c67c6f5c7c412e0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to Minecraft mods, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/strik?utm_term=minecraft+mod+pixelmon+generations+1.+12+2 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368977/normal_5f8812b0558fb.pdfIn PDF document text
    • https://cdn.sqhk.co/vukobefebu/HAhhbha/stormblades_mod_apk_data.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5fdde6f4a2fa7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422894/normal_5fa165e2c5db9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/18dbc6b1-b4db-44b5-b4ba-a845755767d0/synthesize_in_reading.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/696811ad-e6a2-4426-a0bf-25f8692b0fb8/tikalozuziba.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/document_checklist_canadian_citizenship_application_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc350d6-1a29-4520-ae48-e37eb1d9e899/bluedio_ufo_plus_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/145f3ec4-3180-4a0f-9abe-72fb139b6f51/55513186462.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/95559367168.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/free_iphone_online_music.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/xotanekebonoruzob.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7ED 6568 bytes
SHA-256: a4af041a1f0d4c38f6ad1bf96ad04d86226b7158e00c36bfafa620d2932d04d4
font_01_sfnt_off0000d83b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83B 5764 bytes
SHA-256: 0b84aa1bac939468a4c444662d73ec72618161e6c1314232bfaeb2c92f0b6d93
font_02_sfnt_off0000ebd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD6 3364 bytes
SHA-256: 5f1520dcb98b7c8fa856edb1fc0baf5a377be01e400d8d3e7fab3c1cb1cbf90e
font_03_sfnt_off0000f953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF953 10864 bytes
SHA-256: d3dd46f7f58a792f96db581dc5ba25dffe9f656264c647c1b4de77e30181e1cf

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