Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c05cebc5a48bb6…

MALICIOUS

PDF

82.6 KB Created: 2021-05-22 03:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ed7843a4d95117a4f66a59932a43f75b SHA-1: 1a79adad0013d8fbe1cb599c9b5cfdadebd34733 SHA-256: f0c05cebc5a48bb69d0400cf4f14d1d6268ffe65ae49c7c7d7804f49db06f745
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'golowaki.ru', which is likely part of a phishing or malware distribution scheme. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its content, but the presence of the malicious URI strongly suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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://golowaki.ru/strik?utm_term=300+blk+load+data+hornady PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491934/normal_60567ed4b6674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_603a6e9637ce1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470972/normal_5ff02708bc28d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530036/normal_603b57ff8a9b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402711/normal_6067d637690d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455916/normal_60060126e71f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390638/normal_606ac9d8a2084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492588/normal_60658cfa1b0aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_602244942b071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426062/normal_5fd3b19882a51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_60525f3be601d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470839/normal_603ba18614ecf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410004/normal_5fcec05d30cbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503874/normal_6042d4204fd4b.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://uploads.strikinglycdn.com/files/6135d1ed-0289-499a-9ab9-a746602e4975/56767171380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/359dcdcf-b089-499d-a11f-216382f46c52/fifty_shades_of_darker_full_movie_download_dual_audio_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/95686491249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db8239ee-06f3-4af1-ac4e-895c66408cb6/48193569271.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/define_cost_accounting_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/cub_cadet_lt1046_snowblower_attachment.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a09c04bf-08db-404f-b110-f155ec38615b/burimavot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b125d8a-14ac-42da-9338-6c9bb73e5732/how_does_animal_testing_help_humans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68234ff1-327f-4393-9476-051b1c8915af/beowulf_text_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07514e48-9b4a-4411-9288-abf951c4fbd3/find_missing_songs_on_itunes.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/miniature_german_shepherd_puppies_for_sale_in_texas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f688bbb-b27e-4fdd-8cf4-bcd74262477e/94755428581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca2a46ba-e274-4ee3-963a-e9e1c4b26f3b/99754844114.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6469762-62a2-4f51-9b7f-5149fce127f9/como_proteger_mi_red_wifi.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/assistant_director_interview_questions_and_answers.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_off0000f79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79F 4872 bytes
SHA-256: 7c97c89b29327c3931b988b2fce5a7e5362690236f82f578f891215d6b4f77a8
font_01_sfnt_off0001080e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080E 10868 bytes
SHA-256: ed8f6ee85338179c5abf61fc636cbd165abc50adbe2942e9bd564a4650416a21
font_02_sfnt_off00012d13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D13 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f