Malicious PDF — malware analysis report

Static analysis result for SHA-256 00478b1a3a8ea99c…

MALICIOUS

PDF

74.5 KB Created: 2021-03-16 09:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 347f3bb355c9d00e326a4421a8c1f799 SHA-1: 14c2f529ae2b84aa3ed0770dc795da4d910cf928 SHA-256: 00478b1a3a8ea99c3e9404576392e96cf1ff38806e7aa98aacc659cd00230633
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to manipulate search engine results or redirect users to malicious sites. The presence of embedded URLs and the overall structure strongly suggest an attempt to lure users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/strik?utm_term=what+are+the+purposes+of+doing+an+academic+writing+brainly PDF link annotation
    • http://wojazilasifef.iblogger.org/advanced_reading_comprehension_book.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366400/normal_5fdef5cb9ce09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501380/normal_60225fa33d157.pdfIn PDF document text
    • http://ek-arenda.ru/79895324679bv31g.pdfIn PDF document text
    • https://lodavoxi.weebly.com/uploads/1/3/4/5/134505118/ad8e35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380413/normal_6004b09fbefc7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490123/normal_5fc7ac2dd77fe.pdfIn PDF document text
    • http://deromgroup.com/are_ar_15_rifles_legal_in_new_yorka800a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_603bac463aaf5.pdfIn PDF document text
    • http://sexesex.site/proform_505_cst_treadmill_2014_model_manual2156r.pdfIn PDF document text
    • https://libizegenumejav.weebly.com/uploads/1/3/0/7/130775388/6415a37cd1cc9.pdfIn PDF document text
    • https://fenazimo.weebly.com/uploads/1/3/4/4/134437137/accfef0bea12c2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lolofekigosot.epizy.com/bandhan_bengali_film_songs.pdfIn PDF document text
    • http://vedezanopade.epizy.com/easy_clocking_software_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bdc84db-5143-4dff-979f-5772a65e00ca/para_que_sirve_el_te_moringa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/398f05f6-1dee-4e0e-8373-2876cfbce1d1/can_i_do_dbt_on_my_own.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d9714e-b19f-49c8-91a2-d04aaba22e9d/blue_yeti_pattern_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7daa4d7c-6a7d-4acc-a14a-f7cfc3eac895/sims_3_sunset_valley_best_house.pdfIn PDF document text
    • http://kusegipe.epizy.com/what_is_the_meaning_of_interpretation_of_statutes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018089e8-638c-4f46-85c3-678ddbc16253/feluvivonaradazo.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_off0000e491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE491 5916 bytes
SHA-256: eef70b7c1881dea521713d23f7e61ebf4d68223f1933b171d33b00e86a598d36
font_01_sfnt_off0000f8a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A5 10436 bytes
SHA-256: 8e52e53c5c52770ac8d0c67b5315cd94de15e6ac29ff75e876e41fa8196c8183