Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c942667c29316b5…

MALICIOUS

PDF

84.3 KB Created: 2021-03-13 13:28:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d430237399f2e864e17285c564373e5e SHA-1: dc2f33a67220cc96e2db543abb5561910aa25e33 SHA-256: 6c942667c29316b53cec7f41dbff0b5c47defb88fe94b2f25e945c3be447f0e6
126 Risk Score

Malware Insights

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

The PDF file contains multiple external URIs, with several pointing to potentially malicious domains. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan delivery mechanism. The document body, though partially corrupted, suggests a lure related to 'proposal akuntansi sektor publik pdf', aiming to trick users into visiting the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/award?keyword=proposal+akuntansi+sektor+publik+pdf PDF link annotation
    • http://copyrightviolationcenters.com/ielts_reading_practice_test_ielts_upjvxt4.pdfIn PDF document text
    • http://hookup682.site/37733619699iscu9.pdfIn PDF document text
    • http://sokobumoxagug.scienceontheweb.net/soda_stream_sale_myer.pdfIn PDF document text
    • https://cdn.sqhk.co/balaragu/hj5ghd1/stars_league_log.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/hcQQijr/tatibofajatifuwiso.pdfIn PDF document text
    • http://mofobawosenej.mygamesonline.org/nufibaruneb.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/hrjjanY/warzone_bunker_codes_season_6_prison.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/W4vgc5b/hawthorn_bank_clinton_mo.pdfIn PDF document text
    • http://xejepurefe.scienceontheweb.net/56235627209.pdfIn PDF document text
    • http://handler-autoscout24.com/netflix_movies_free_720pcvood.pdfIn PDF document text
    • http://sutovuresas.mygamesonline.org/75426677994.pdfIn PDF document text
    • http://trastqort.online/fuwulilapitebirutipazatgegxl.pdfIn PDF document text
    • http://small-italy.space/merriam_webster_medical_dictionary_apknt2oi.pdfIn PDF document text
    • https://cdn.sqhk.co/bisulalu/ghVmqgj/98193873439.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rexefobixavater.myartsonline.com/exclamatory_sentences_how_what_so_such_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/88738492396.pdfIn PDF document text
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_f80161f60a2b40d9a89fa3ece9fda8e4.pdf?index=trueIn PDF document text
    • https://08c3cc13-1ce0-4add-927e-a3aed263473e.filesusr.com/ugd/ccf397_34179c4776d04920ad213b8183694bd7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/sesat.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/17414971085.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/weber_grill_grates_spirit_e_310.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/chromosome_structure_and_function.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CD 5240 bytes
SHA-256: a0c05b8a5218f29488874c5917b392a1763283f281a25a5605453b01cb9321b0
font_01_sfnt_off00010ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA5 10012 bytes
SHA-256: cb64b5f2fac0f049cf43fa3f1dcb6ad53dc4bc19c75c6bfd055fc95eb3068ea1
font_02_sfnt_off00012e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E43 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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