Malicious PDF — malware analysis report

Static analysis result for SHA-256 a76413c953a49cf8…

MALICIOUS

PDF

76.7 KB Created: 2021-03-12 03:12:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0558744270e1fc6b604c766d5996960 SHA-1: ea2317b9cfe7d3a8ea835fe53b39b3c29e26f7d6 SHA-256: a76413c953a49cf84eb14cc27bf8d65fd6fc2233c1d5bf6c31dce4c0bc297c3c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL leading to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a movie search query. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or credential harvesting.

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://dafemum.ru/aws?utm_term=how+long+is+harry+potter+5+movie
    • https://static.s123-cdn-static.com/uploads/4425723/normal_6005996f8284a.pdf
    • https://jepejopik.weebly.com/uploads/1/3/4/6/134610321/lowelo.pdf
    • https://cdn.sqhk.co/ragebobeb/hIBgeji/vizufel.pdf
    • https://cdn.sqhk.co/tuxonewebuke/OSgjghg/ancient_egyptian_history_books.pdf
    • https://jerepubiz.weebly.com/uploads/1/3/1/6/131606505/4220724.pdf
    • https://cdn.sqhk.co/jotapepikota/thiy6IK/93822607524.pdf
    • https://static.s123-cdn-static.com/uploads/4368495/normal_6004530c1fd8f.pdf
    • https://rejukikigukaw.weebly.com/uploads/1/3/5/3/135387704/pilololibuzife-naximezu-getiguvopaj-novelazeju.pdf
    • https://cdn-cms.f-static.net/uploads/4453537/normal_6011e055ced7d.pdf
    • https://cdn-cms.f-static.net/uploads/4414873/normal_601782238050f.pdf
    • https://cdn-cms.f-static.net/uploads/4408463/normal_6040efcccc11f.pdf
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/fe92360ae.pdf
    • https://cdn.sqhk.co/tawunipufop/bg8Tgcv/tapijotewanipowowowuwipib.pdf
    • https://regivuno.weebly.com/uploads/1/3/1/0/131070843/dezurijatajopu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/de64929e-a6ea-4bc6-96d5-4d838fe84944/basoguwemirefu.pdf
    • https://uploads.strikinglycdn.com/files/ea161ada-470b-4a63-8fd8-f84ee91c8025/restating_the_question_worksheet_8th_grade.pdf
    • https://s3.amazonaws.com/divelatoxa/wowugaxemebusowujolesuja.pdf
    • https://s3.amazonaws.com/xijuxosisomuna/kugoxogamini.pdf
    • https://uploads.strikinglycdn.com/files/9c4aaf9c-39d9-4cbc-8382-5e4c2bd1c62d/37059168160.pdf
    • https://s3.amazonaws.com/bejikefowu/emergency_medicine_salary_austin_texas.pdf
    • https://uploads.strikinglycdn.com/files/7d960f09-003d-47bb-86f0-383c2610c4a3/nugimonomeborad.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd1.bin
512fabeccd01f04218092b5287efb5e6b0b1ed2b93f6cd5adf1d9824cc6f7fea
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD1 5572 bytes
font_01_sfnt_off000100bd.bin
cd3cfa1db3c7b3eeccd6831c2163d50df3bd42f24e6a40e6b573631e5869d3b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x100BD 10868 bytes