Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74f14ee70fb4a0a…

MALICIOUS

PDF

73.2 KB Created: 2021-06-11 10:37:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2769efb6e261bb218d1311a2c91cde36 SHA-1: b0d160d3e6534e17ec37c6704bb7e82d3c3d2ba0 SHA-256: e74f14ee70fb4a0a65edb4eaebef860d76d8a07fb1c5b72ac63556e0382de8a1
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://garglob.ru/pbw?utm_term=transformers+4+480p PDF link annotation
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/nuviza.pdfIn PDF document text
    • https://kowumawadixowiv.weebly.com/uploads/1/3/4/8/134888970/751917.pdfIn PDF document text
    • https://xitapazutirubej.weebly.com/uploads/1/3/4/8/134882608/8176081.pdfIn PDF document text
    • https://kamapapidez.weebly.com/uploads/1/3/5/9/135962567/xutipelifitejulu.pdfIn PDF document text
    • https://lamuxoguva.weebly.com/uploads/1/3/4/8/134882056/4d1855419a19e.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/podobumozado.pdfIn PDF document text
    • https://pamokevavazodo.weebly.com/uploads/1/3/4/3/134386981/xiwajenudi_nejuziraged_riwodatujem_vuravolulaxe.pdfIn PDF document text
    • https://fosegeluka.weebly.com/uploads/1/3/4/7/134717840/lufoxegi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wotasaful.pbworks.com/w/file/fetch/144456900/pufexekinawogutixaruxipi.pdfIn PDF document text
    • http://sutodoromar.pbworks.com/f/folekujuxiwuximarimejox.pdfIn PDF document text
    • http://foziwedugumu.pbworks.com/w/file/fetch/144447249/sugidemixene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf4a0eb5-f7a9-4d31-8e9e-f29b562c1d95/map_of_the_world_with_equator_and_hemispheres.pdfIn PDF document text
    • http://fipivuzigoge.pbworks.com/f/how_much_do_tanjore_paintings_cost.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd87294c-6fdb-4ba2-a958-90a31753e1cc/world_history_project_ideas_for_middle_school.pdfIn PDF document text
    • http://mefijunov.pbworks.com/f/daily_declarations_for_spiritual_warfare_biblical_principles_to_defeat_the_devil.pdfIn PDF document text
    • http://dipoziw.pbworks.com/f/periodic_table_webquest_answer_key.pdfIn PDF document text
    • http://pigedigasexu.pbworks.com/w/file/fetch/144505434/how_to_enter_service_mode_on_samsung_smart_tv.pdfIn PDF document text
    • http://togusan.pbworks.com/f/80958083535.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/f/ielts_reading_placement_test_2021.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF33 5388 bytes
SHA-256: 08e5554525f259b7735d1d3f7246a5ccb222339368ebd037da31baafef160083
font_01_sfnt_off0000f16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16C 11316 bytes
SHA-256: e6702608b1eb19f54525de636ccac2d05991e87bcebe73d3aa6f127859903a6f

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