Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd83fb3a0482d76…

MALICIOUS

PDF

74.7 KB Created: 2021-03-28 13:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f6429c8bacbf319538fb0d659a0fed3b SHA-1: 0869e022c0ea6b6fd6ce6f2a7bdd999f65f20e7a SHA-256: 2fd83fb3a0482d7609f5f277fcea75cad312931ec6b1d54c3bfccdab60103a75
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links pointing to known malicious redirectors and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded links are indicative of exploitation for client execution, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=bobbi+brown+brush+set+price In PDF document text
    • http://botefin.medianewsonline.com/rockola_jukebox_model_488.pdfIn PDF document text
    • http://pifovabu.getenjoyment.net/kapifobetezo.pdfIn PDF document text
    • http://larumutul.getenjoyment.net/bedford_reader_13th_edition.pdfIn PDF document text
    • http://topstop.site/favexizogonum32qo.pdfIn PDF document text
    • http://wssummer.space/mantra_pushpam_in_telugu7rihd.pdfIn PDF document text
    • http://trysalon.xyz/268186837052l4rk.pdfIn PDF document text
    • http://tinivoze.22web.org/lg_g_vista_2_google_bypass.pdfIn PDF document text
    • http://goldotzyv.ru/what_jobs_can_you_get_with_a_masters_degree_in_public_healthrjuvg.pdfIn PDF document text
    • http://taxevidel.medianewsonline.com/microsoft_word_2016_free_download_full_version_32_bit.pdfIn PDF document text
    • http://damewumesigalut.medianewsonline.com/5130408942.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/mewoditagizijasugadoritik.pdfIn PDF document text
    • http://wifisef.medianewsonline.com/astrology_books_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/edd4bcb8-2884-4a31-9086-986909dffef0/linden_black_forest_alarm_clock_made_in_germany.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9434293-0e6e-4052-96dc-8373940b0c9d/45531459367.pdfIn PDF document text
    • http://lifobem.myartsonline.com/lejagitisuzofufakexezob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cfc0605-f9fc-4175-bb2d-014bc6e85d1e/nabunoxodubixojoti.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/race_and_reunion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2233073-8e80-4d84-ac5e-52cbde0797eb/suzuki_cello_book_11.pdfIn PDF document text
    • http://zanebinelit.rf.gd/java_programming_projects_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70a6af7a-f929-4c21-b5c6-278109827a7e/24368208022.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_off0000e746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE746 5060 bytes
SHA-256: d2f6c0c39dc6f9e83b5b358b6ce9761d949088fb24c4c44450a99f471c544237
font_01_sfnt_off0000f88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88D 10948 bytes
SHA-256: a33fd3fb87de00c13323ac8212051a3cdb449c9cc04d24b4b57ba5252ad19139

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