Malicious PDF — malware analysis report

Static analysis result for SHA-256 0051681d554b712a…

MALICIOUS

PDF

77.7 KB Created: 2021-05-01 09:35:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1e3ae330d69a2d6bf88ea285972162bf SHA-1: 56d35be0d7aa957da1a1faa45708979a23ca8d72 SHA-256: 0051681d554b712ac16ae34223bab3559415506a1141e4f0012a7fefc210238a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

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://jumiwimov.ru/strik?utm_term=what+is+hindi+meaning+of+transcendental+meditation PDF link annotation
    • https://dijafujuzu.weebly.com/uploads/1/3/4/3/134369935/0fa7857cc9286.pdfIn PDF document text
    • https://fafevidelaxikez.weebly.com/uploads/1/3/4/4/134481631/dubefezuzafo.pdfIn PDF document text
    • http://mivibowefumar.iblogger.org/what_helps_period_cramps_and_bloating.pdfIn PDF document text
    • http://xesapuwax.mywebcommunity.org/93535255523.pdfIn PDF document text
    • http://spencermcman.us/lg_mini_split_ac_installation_manualcjbzv.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/online_business_blueprint.pdfIn PDF document text
    • http://intekzafast.online/23592646881wsypi.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/the_colour_of_magic_book_download.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/8647868.pdfIn PDF document text
    • http://mutedagagagexe.22web.org/wuxopuwuxefulomekopim.pdfIn PDF document text
    • http://hayatevesigar.online/what_to_wear_to_formal_afternoon_weddingg44h7.pdfIn PDF document text
    • http://futuroke.iblogger.org/73259400894.pdfIn PDF document text
    • http://tapopapebesawu.getenjoyment.net/10077151351.pdfIn PDF document text
    • https://najuxobetejip.weebly.com/uploads/1/3/4/2/134265875/merafonusute.pdfIn PDF document text
    • http://wixosefimaba.scienceontheweb.net/pedukar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tonaxoguzigep.epizy.com/what_was_america_called_in_the_1700s.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/alt_balaji_mod_apk_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/difajumusuzimajibewarir.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/chaos_command_magician_deck_duel_links.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/40392127201.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/keith_johnson_acoustic_and_auditory_phonetics.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/74594600601.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/att_cordless_phone_dect_6.0_user_manual.pdfIn PDF document text
    • http://zuniguvip.epizy.com/31746807958.pdfIn PDF document text
    • http://genolewedusu.myartsonline.com/isometric_dot_paper_a4.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF016 5448 bytes
SHA-256: a78ba619c46ebe312fab921250caeede71d4c0611babad7b8e43ed8bf7a6f34c
font_01_sfnt_off0001027e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027E 11388 bytes
SHA-256: d59d9a26a01747a78768a67ca4e9f1f8697c3192521044a4c7ffb1fde578b66e

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