Malicious PDF — malware analysis report

Static analysis result for SHA-256 40d6634dc6f50ba0…

MALICIOUS

PDF

70.3 KB Created: 2021-03-14 08:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c7306f79b6a4280214ce8956405bd78 SHA-1: 28d5f8767774c9822f676db6049bbb8f5139e0c7 SHA-256: 40d6634dc6f50ba04d0a6165efc850e5fdcd6b5f88ce0daa05ce69f9d1c2a504
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 contains embedded URLs that lead to suspicious domains, suggesting an attempt to redirect users to malicious content. While no scripts were explicitly extracted, the presence of embedded URLs and the overall malicious classification indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=chal+mere+bhai+songs+ming
    • http://pinopizo.sportsontheweb.net/chromatin_structure_and_function.pdf
    • http://tigafik.mygamesonline.org/how_to_eat_move_and_be_healthy_download.pdf
    • http://powajaxib.medianewsonline.com/the_maze_runner_2_full_movie_in_hindi_download_filmyzilla.pdf
    • https://cdn.sqhk.co/xudapurofoz/RHgdVib/dafabirinonuwef.pdf
    • https://wafanipo.weebly.com/uploads/1/3/2/6/132695839/653608.pdf
    • https://cdn.sqhk.co/bugolajoxodu/idijjaF/sword_art_online_wallpaper_ios.pdf
    • https://puziwifatewir.weebly.com/uploads/1/3/4/7/134715637/betatowekitugavone.pdf
    • https://cdn.sqhk.co/surofowudula/hbLjeig/coffin_dance_meme_wallpaper_hd.pdf
    • http://razvivatel.blog/real_racing_3_save_file_6.5.1il0uj.pdf
    • http://beremoter.online/pictographs_worksheets_5th_grade6clf4.pdf
    • http://ziwigosopijulal.mygamesonline.org/browning_a5_serial_number_starts_with_x.pdf
    • http://eyebrowthreadingdallastx.com/troll_mount_vendor_bfabm9d9.pdf
    • https://cdn-cms.f-static.net/uploads/4496582/normal_602782a03fcb2.pdf
    • https://cdn-cms.f-static.net/uploads/4403959/normal_601530a9337f9.pdf
    • https://sarenudubafuje.weebly.com/uploads/1/3/4/6/134680246/6082356.pdf
    • https://cdn.sqhk.co/vasinabew/hijibji/degusepekurax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/52432878-4ffb-4434-8da8-cd292c572ae9/31285109628.pdf
    • https://uploads.strikinglycdn.com/files/f24f9534-ce6c-4955-baf5-df8bd3a67f2c/ogilvy_on_advertising_by_david_ogilvy_free_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_off0000d699.bin
f8cbd6ebd0c92b1c054c3949886886313f5ff748303e5b2157f6d8b869a84508
pdf-font-stream PDF embedded font (sfnt) at offset 0xD699 5144 bytes
font_01_sfnt_off0000e7e4.bin
2133c48f304ab066799241ede9a11f447cf5fc2539cc35b07d514542bbc6004c
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E4 10672 bytes