Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c3ee64122faab4a…

MALICIOUS

PDF

82.1 KB Created: 2021-03-08 06:36:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fc16454be01404409e8f187cecc34cc SHA-1: 977bd9f2a05e8af87b39f83634c1eca2e8306039 SHA-256: 3c3ee64122faab4ac3794cd8df9330174cdf17baf3d97c3bd7843647469a9333
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, many of which point to unknown or potentially malicious domains, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=what+does+kingdom+by+the+sea+mean+in+annabel+lee
    • http://idealica-ituficiale.website/dialectical_materialism_summaryxwnex.pdf
    • http://lnstagramcentre.net/nufeviputa9h2ke.pdf
    • https://vutojexi.weebly.com/uploads/1/3/0/7/130776275/midadawurimaso_faxuv_kizotugasuf_zegiladaxe.pdf
    • https://sakixuso.weebly.com/uploads/1/3/4/4/134488330/ca6d1ec4f536c.pdf
    • https://kofetasug.weebly.com/uploads/1/3/0/8/130874362/bajurar_tawunedur.pdf
    • https://rodusebit.weebly.com/uploads/1/3/0/8/130874039/6248737.pdf
    • https://fuzipoxo.weebly.com/uploads/1/3/0/8/130873840/tajeziwutafifefom.pdf
    • https://raxokasovupix.weebly.com/uploads/1/3/5/3/135389905/fanovewu-sofuwarikole-fomovese-tudanurimed.pdf
    • http://runolive.com/tuzulisegonin4kwhu.pdf
    • https://bitusuverutito.weebly.com/uploads/1/3/1/8/131871453/7336533.pdf
    • http://autobuff.xyz/vixalasezeuj5qv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_c63eaa0bcdeb4591b3089d3febaaa8d5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/29e88d29-b28c-4d2c-b91c-209b6b251109/how_many_calories_are_in_a_diet_ocean_water_from_sonic.pdf
    • https://uploads.strikinglycdn.com/files/47885e76-ffd8-424b-b6d4-d3910bf70c93/new_england_bees_tyngsboro.pdf
    • https://uploads.strikinglycdn.com/files/81bae932-71b8-4d35-bb27-e9ed0004aad3/virekedeza.pdf
    • https://uploads.strikinglycdn.com/files/eaf7f694-9002-4506-81f5-944d14f96810/43417733730.pdf
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_3f1a722adbcc407aa173c2dfc551e56f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3538f40d-935a-4f04-9bdd-6bed044dd2c8/gotuxufube.pdf
    • https://uploads.strikinglycdn.com/files/b0029f25-10fd-4183-9a87-e0d1e54b8d58/how_to_install_defrost_timer_in_refrigerator.pdf
    • https://uploads.strikinglycdn.com/files/de9d77f0-64ae-4384-9501-eac9ebb07e36/multiplying_integers_word_problems_worksheet_with_answer_key.pdf
    • https://uploads.strikinglycdn.com/files/001717c1-22f1-4bb1-a741-17011a58e0d0/penorelumozujev.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb4b.bin
a28fcc4ba65d8171a55e8b87d646ac5d1dd213f66ab2b0026fd39e5ca5d32d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4B 2900 bytes
font_01_sfnt_off0000f58d.bin
404dbb30a1f9fc7b71456754c1c354c2847954ffc6a67a86aa0341f6226e4591		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF58D 5252 bytes
font_02_sfnt_off0001074e.bin
754d45964b4f51d2a65ba8f0267a9a29895b63efcae0706a65b876e8108b6e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1074E 10920 bytes
font_03_sfnt_off00012c40.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C40 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.