Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb6aa59769b49e02…

MALICIOUS

PDF

74.2 KB Created: 2021-03-14 12:11:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c5a9e340430799e0801bac385e49875 SHA-1: e9e4b6e26cc400d3e3456a6d198b7acbc872b7f8 SHA-256: eb6aa59769b49e02e434128079b76e50eeaae077879bea8f2414d1ce02b33c64
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The PDF contains a large number of external links, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics point towards malicious intent, likely to redirect users to compromised or malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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-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/strik?utm_term=what+are+internal+conflicts+in+literature
    • https://cdn.sqhk.co/gumakulex/jf7nZhi/79576013903.pdf
    • https://favimorujupufu.weebly.com/uploads/1/3/2/7/132710565/buperobogejafa.pdf
    • https://cdn.sqhk.co/bimonabozo/mb9PQhb/snow_drift_game_unblocked.pdf
    • https://piwevowukitibe.weebly.com/uploads/1/3/1/4/131454699/8964347.pdf
    • https://pewuwokajop.weebly.com/uploads/1/3/0/7/130775265/41b37ae49a8.pdf
    • https://vuxuminitemup.weebly.com/uploads/1/3/0/8/130874085/3621116.pdf
    • https://cdn.sqhk.co/zunesunatiri/0XjpQ6t/nezajagizadapawovabitet.pdf
    • https://cdn.sqhk.co/netimawifes/igjFRjd/spirit_animals_book_series_wikipedia.pdf
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/sagite-misezufatewilir.pdf
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/lopufitosi-zowuvo-zodaxolifuv.pdf
    • https://dapalirodo.weebly.com/uploads/1/3/1/4/131483520/7797725.pdf
    • https://gejodawutu.weebly.com/uploads/1/3/1/1/131164152/8718256.pdf
    • https://bebibamo.weebly.com/uploads/1/3/1/4/131438385/3ea04.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_036c1a0d507343a192f534700cb8810f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/fb710d57-7fb6-4402-a3e2-038227a37914/the_aeneid_summary_book_11.pdf
    • https://uploads.strikinglycdn.com/files/b78ca361-9014-4002-859f-d892ae8f70d2/jixatisemubazexi.pdf
    • https://8f0c9b82-9570-4081-bbb7-5e23a534ea09.filesusr.com/ugd/7008f3_0b18430f0404481fa2f04a70d0e11afc.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e74c25bb-777b-4079-ae88-519203701dbd/harman_pellet_stove_insert_manual.pdf
    • https://33b7cf8b-1cb2-46d9-9063-17e97cba5e80.filesusr.com/ugd/9edd50_c254ca6b121240538ba5d4a3a7281b61.pdf?index=true
    • https://uploads.strikinglycdn.com/files/5f1e51f2-25ce-4a7f-b8e7-511ae3502db0/plot_3d_data_in_mathematica.pdf
    • https://uploads.strikinglycdn.com/files/56fa17e3-de4e-4474-afcd-f1b3ff4ac9e9/nomejemo.pdf
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_531c243c6a6c4925a1ca59e3f78f5ee4.pdf?index=true
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_e37e0ccbb6fd45409f5560f009cfdf05.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2c6616da-c4fb-4739-b0fe-895ca104d44f/92663882896.pdf
    • https://uploads.strikinglycdn.com/files/2780a83f-04f7-4f2c-a62d-fbacc474ec77/wavowelabizarepeti.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_off0000e88e.bin
7e9dff12f3e4db3854b6f8acfdf0013706c2dc356f294006778828354d716474		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE88E 4980 bytes
font_01_sfnt_off0000f988.bin
2f115caca2ae8835f9a1501819f424e7b5ccb8b4b40671bb0c907142523e0b5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF988 9836 bytes

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