Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0209218ca8bba7…

MALICIOUS

PDF

73.4 KB Created: 2021-05-12 23:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b96a695e193a710b17371365b2f5c2a SHA-1: dc22abe1e862b46afd1637b49daafa2665c711c8 SHA-256: de0209218ca8bba7c36fd1390b452e8a485e8281373912f9a513ac36238e101a
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Onn wireless mouse installation'. The presence of numerous external URLs indicates an attempt to redirect the user to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dafemum.ru/strik?utm_term=onn+wireless+mouse+installation
    • http://emirofficialzm.com/android_google_assistant_developerfjktx.pdf
    • http://retapadu.medianewsonline.com/rufusub.pdf
    • https://mofugitapab.weebly.com/uploads/1/3/4/7/134728490/depemuf.pdf
    • http://tiktoktop.design/quadratic_inequalities_worksheet_answer_key5x9du.pdf
    • http://artdebug.site/the_lord_of_the_rings_the_fellowship_of_the_ring_game_boy_advanceifz9q.pdf
    • https://cdn-cms.f-static.net/uploads/4413982/normal_601f86bd57406.pdf
    • http://oficialshoes.site/top_of_rack_leaf_spine4n8ml.pdf
    • http://kupivse.xyz/bingo_sheet_osuv9vc0.pdf
    • http://penexej.mywebcommunity.org/ielts_academic_test_example.pdf
    • http://tokiridevifo.medianewsonline.com/zejutuvurabepobikugib.pdf
    • http://love-your-lips.online/valor_calidad_definicionzk92o.pdf
    • https://diwamelebo.weebly.com/uploads/1/3/4/1/134108813/kurujuwez.pdf
    • https://cdn-cms.f-static.net/uploads/4486197/normal_601726308323c.pdf
    • https://vujivizu.weebly.com/uploads/1/3/5/3/135305207/jimosigo.pdf
    • https://cdn-cms.f-static.net/uploads/4393752/normal_5fdc60ce58fe0.pdf
    • https://cdn-cms.f-static.net/uploads/4446790/normal_603c1df77abec.pdf
    • http://medtechnika1.ru/how_many_countries_touch_tropic_of_cancerqybck.pdf
    • https://mawetifatine.weebly.com/uploads/1/3/2/6/132683292/7350268.pdf
    • https://tetoferapijala.weebly.com/uploads/1/3/1/6/131606168/fufoniwu.pdf
    • https://sovakevu.weebly.com/uploads/1/3/4/3/134341498/3166766.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jelomasulavi.atwebpages.com/brush_up_your_english_book_download.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_off0000e266.bin
f3cfd7b4bfc5a29b33ce837be8e50e2a9b7221f0a3e4dab7a0844e86e1ff6ee5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE266 4952 bytes
font_01_sfnt_off0000f32f.bin
d9e8ed3738dc0f70ca493353d15d9f1a2ee3b79d2bddabc75ddd6dda1db47181
pdf-font-stream PDF embedded font (sfnt) at offset 0xF32F 10836 bytes