Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94d6304e8b9ffa5…

MALICIOUS

PDF

84.2 KB Created: 2021-03-08 02:27:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 9d94bacc234fbd85f0684f6698338ca7 SHA-1: e7ba82e2701eeb9af260902868b86c3758718c1d SHA-256: f94d6304e8b9ffa51e93bb898da947c2afc511b9a49633b31affab67e074a293
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content, likely as 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
  • 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://druttle.ru/wix?keyword=at%2526t+zte+phone+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475197/normal_6012ce37c79bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454825/normal_5fee18a392610.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/9423607285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_600b4fad7e68f.pdfIn PDF document text
    • http://bodikakib.22web.org/dedham_ma_accident_report.pdfIn PDF document text
    • http://fumigatoff.online/60566550794k73ox.pdfIn PDF document text
    • http://rolazipomi.22web.org/la_biblia_en_linea_version_reina_valera_1960.pdfIn PDF document text
    • http://visionnew.xyz/cartel_de_santa_vato_sencillo_cloroformo_letrariv3c.pdfIn PDF document text
    • http://sizuxofutitarax.mypressonline.com/crock_pot_smart_pot_7_quart.pdfIn PDF document text
    • http://zoom-omsk.ru/the_humans_stephen_karam_scriptw370w.pdfIn PDF document text
    • http://samettemiz.xyz/motiluqmqy.pdfIn PDF document text
    • http://zikubuji.iblogger.org/insignia_24_inch_tv_reviews.pdfIn PDF document text
    • http://sejapamuji.22web.org/65247376442.pdfIn PDF document text
    • http://bamuxawubukid.22web.org/how_to_stop_my_brk_smoke_alarm_from_beeping.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pekagotikoweguf.epizy.com/81301352474.pdfIn PDF document text
    • http://muwirosogop.epizy.com/cv_format_for_job_in_bangladesh.pdfIn PDF document text
    • http://vejawotivifima.rf.gd/how_many_knots_equal_mph.pdfIn PDF document text
    • http://molopafefo.rf.gd/jujin.pdfIn PDF document text
    • http://vafotuneg.rf.gd/what_is_internal_reflux_in_distillation.pdfIn PDF document text
    • http://pewavifasovifuz.epizy.com/43103553003.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C1 6440 bytes
SHA-256: edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75
font_01_sfnt_off000104b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104B7 4144 bytes
SHA-256: 342af526eadab6d280a6c9b5342a94db61f67a18ab89ad67ca4126a2bccef53b
font_02_sfnt_off000112da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112DA 15784 bytes
SHA-256: 7f18e48b99229337ad18e3671111d71b56dc52a857587ed9bc06142075a6e92e

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