Malicious PDF — malware analysis report

Static analysis result for SHA-256 deebc88c1a705a5b…

MALICIOUS

PDF

82.1 KB Created: 2021-03-23 15:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5612e534184dbc45e78c9a24c2075ca7 SHA-1: 7b0a71989d4cd02d6a776067ac4a0c08263939ba SHA-256: deebc88c1a705a5bcb1f1fafd077d40e32a7bdeff26626ee2467cd9a9b056f2f
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of the PDF_URI heuristic indicates an attempt to lead the user to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=el+buen+pastor+iglesia
    • https://cdn-cms.f-static.net/uploads/4375894/normal_6031c9204c8a9.pdf
    • https://cdn.sqhk.co/xonepogafix/cQcuQgc/79729216516.pdf
    • http://herss.space/tintin_comics_online_shopping2vnix.pdf
    • http://wide-do.top/what_is_the_orientation_of_a_narrative_paragraphtpqlx.pdf
    • https://cdn-cms.f-static.net/uploads/4417675/normal_603cff50e1a86.pdf
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/lizapumapus-pixazaloxamev.pdf
    • http://gladkoe-telo.xyz/friend_zone_movie_hdua5lf.pdf
    • http://qrettalq.online/parachute_80s_arcade_games_for_sale0dl29.pdf
    • https://ruxebawinafa.weebly.com/uploads/1/3/0/7/130776533/2472916.pdf
    • https://cdn.sqhk.co/tamejenonisi/HQCLhjh/tubezizodiwirorojubes.pdf
    • http://cabinetsop.xyz/dawn_octavia_butler_part_2_summarybdh9x.pdf
    • http://lepawarowupi.iblogger.org/46930943495.pdf
    • https://cdn-cms.f-static.net/uploads/4416143/normal_6046e69bd6a9e.pdf
    • https://cdn.sqhk.co/rabuvimi/Xhjhiih/19973426657.pdf
    • http://prostotit.site/serato_dj_pro_crack_mac955eb.pdf
    • http://frasqen.online/how_to_read_japanese_candlestick_patterns3abji.pdf
    • https://dobeluxujopi.weebly.com/uploads/1/3/0/7/130775615/3155472a5957.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ropigitapeda.rf.gd/7649157937.pdf
    • http://lisudanuzi.epizy.com/jomejexegutotuz.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_off000100fc.bin
0f1f72292958157c08610bba286640ce3921d44fd44b71250002d0a33dc05ebe
pdf-font-stream PDF embedded font (sfnt) at offset 0x100FC 5084 bytes
font_01_sfnt_off00011250.bin
4893507b166bbab420497f73db217042f824a38fd223d71d57161fea02da0256
pdf-font-stream PDF embedded font (sfnt) at offset 0x11250 12476 bytes