Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5cccf60e0ed4450…

MALICIOUS

PDF

79.6 KB Created: 2021-03-20 15:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39cb2a5ed0adcd1d6cba6d083c1cad9c SHA-1: 3a429ce6894d4774c274cd93c22c722ccb5cac5c SHA-256: f5cccf60e0ed445054817473711fa0b0651b7a9efa187fd321a606b437b5f9ad
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, identified as a link farm for SEO purposes, which is a common tactic for distributing malware or phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/wix?keyword=my+name+is+joe+songs
    • http://majusenise.sportsontheweb.net/jovuzezubofufamari.pdf
    • https://cdn.sqhk.co/rojarasam/VChFWb3/89103279344.pdf
    • https://cdn.sqhk.co/popuzanuguw/PqhcSzD/hack_bailador_super_3._3.pdf
    • https://vepodiruwa.weebly.com/uploads/1/3/4/3/134374194/kaguwezul.pdf
    • https://cdn.sqhk.co/jumivosokigo/aOjivSW/39225405206.pdf
    • https://kajubogoxin.weebly.com/uploads/1/3/0/9/130969430/2934019.pdf
    • http://pibarulajido.getenjoyment.net/merge_with_adobe_reader_x.pdf
    • http://felagem.getenjoyment.net/afasia_global_adalah.pdf
    • https://cdn.sqhk.co/rubutemoxe/Tge7bhi/evolution_definition_environmental_science.pdf
    • https://jakugogafezokev.weebly.com/uploads/1/3/1/4/131437362/adcc9467.pdf
    • https://topukutenikoxi.weebly.com/uploads/1/3/4/6/134668920/giped_rirutalime.pdf
    • http://fibisazorowax.mypressonline.com/common_core_standards_math.pdf
    • https://cdn.sqhk.co/sisowufabo/ajjPtjg/dozerem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2a4132fb-fc5e-4a1c-ab37-9ec70d61f2ab/nusezediturorojonisutejaz.pdf
    • https://uploads.strikinglycdn.com/files/a4c6d763-8c69-4f79-81d1-7b0cb92647f3/how_to_reset_a_honeywell_wireless_thermostat_cm927.pdf
    • https://uploads.strikinglycdn.com/files/4982c91b-7566-49f2-9c2f-1a0ca88ca9f1/how_to_reset_true_metrix_air_glucose_meter.pdf
    • http://tijuvewoduga.onlinewebshop.net/69385666066.pdf
    • https://uploads.strikinglycdn.com/files/863740c7-db4d-497a-a78a-414d2c8f7a70/the_things_they_carried_summary_chapter_11.pdf
    • https://uploads.strikinglycdn.com/files/e7300bb1-b7a7-4922-b668-588180ffadbe/guritujijulekezuxu.pdf
    • https://uploads.strikinglycdn.com/files/ceddf75e-aa55-457a-a18f-ef9c8a2613e1/92869707787.pdf
    • https://uploads.strikinglycdn.com/files/c2d351ca-bad3-4113-8779-48e70d225c24/zabatokus.pdf
    • https://uploads.strikinglycdn.com/files/c96af666-d1d7-466e-a5ce-3c91909240af/bamojim.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_off0000fadb.bin
c73d8f67a2fec753880555b5e241e47fbcf074a39a9d8cc29385b0a81208bf51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFADB 5060 bytes
font_01_sfnt_off00010c21.bin
fa97ac3cada766c61981c44536ca6780b0405f1fa5ae20cfff02818c2abde92f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C21 11028 bytes

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