Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d32ce27dc372299…

MALICIOUS

PDF

74.5 KB Created: 2021-04-22 01:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b2e787fc580fb00509078a57b7e8c8 SHA-1: 6dda12dbe5c5f6ed12820a9433481f745043573b SHA-256: 7d32ce27dc37229973c1aabebe7aad2bc9338ac945beeebcf257ae8d2600d795
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a large number of external links, many of which point to PDF files, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, appears to be a lure related to search queries, directing users to potentially malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jacksth.ru/strik?utm_term=what+is+another+word+for+first
    • http://plafond.xyz/rovorurorikuzabudauez6x.pdf
    • http://1cats.space/638294043807t62o.pdf
    • http://stavki.link/xolusugd7pcs.pdf
    • https://sudiseva.weebly.com/uploads/1/3/4/4/134470115/ed5f7df.pdf
    • https://torovuzexas.weebly.com/uploads/1/3/2/7/132710592/a59d6.pdf
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/kisagamuxabedup-kusupa-pomuvesoriwija.pdf
    • https://metipejoxeve.weebly.com/uploads/1/3/4/7/134725173/e8462d6f644f0fd.pdf
    • https://vukumurumijolot.weebly.com/uploads/1/3/4/4/134433046/4646361.pdf
    • http://paxosij.mygamesonline.org/4th_industrial_revolution_klaus_schwab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f38ff3c3-0e23-4bf6-811e-de4c3aa55898/jaredikodosafevasomo.pdf
    • http://vawerudarasikow.myartsonline.com/3110284499.pdf
    • http://pizenusogusu.atwebpages.com/biodata_format_for_marriage_purpose.pdf
    • https://uploads.strikinglycdn.com/files/099ba4c2-58e6-43d6-af28-181b7c0831c2/the_pursuit_of_happiness_chapter_4_summary.pdf
    • https://uploads.strikinglycdn.com/files/2bdbfa0a-432c-4c5e-a70e-25ee06cc3443/what_are_the_4_steps_of_computational_thinking.pdf
    • https://uploads.strikinglycdn.com/files/0b069f90-2ac7-488d-83be-e1a750c234be/what_is_music_appreciation.pdf
    • https://uploads.strikinglycdn.com/files/c1e213a7-cd25-4994-9da0-d8112d60db5d/how_to_get_a_job_teaching_english_in_spain.pdf
    • https://uploads.strikinglycdn.com/files/69e5effb-36bd-4efb-ae87-cbd11cd19619/should_i_buy_a_refurbished_ipad_mini.pdf
    • https://uploads.strikinglycdn.com/files/1b92f909-a189-4841-95c1-a3522bd58ae9/mini_dvi_to_usb_c.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_off0000e5e3.bin
3376c142b862402e0b9b2bdaaf47c0cfdf7530ef81aeadf787f61a4c61d99128		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E3 5068 bytes
font_01_sfnt_off0000f733.bin
75c21696b3445ac1920c77ea8447d77364cda2c2bd7ada581ed2363797443e68		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF733 10612 bytes

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