Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d03732ed997f822…

MALICIOUS

PDF

78.6 KB Created: 2021-04-07 06:32:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 014f28f0eadb87d33b03fafece762f16 SHA-1: 6a32ec1859a839199b733b3b415d41e78ca23b69 SHA-256: 3d03732ed997f822e307618ce50ffbd5a8866d3ebd04080add583036cb40044e
134 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous external URIs, including a link farm on disposable hosting, suggests an attempt to redirect users to malicious sites. The 'SE_DOWNLOAD_BUTTON' heuristic further supports a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/123?utm_term=vsco+full+pack+android+1 PDF link annotation
    • http://kevakigev.medianewsonline.com/duwizujanasixareji.pdfIn PDF document text
    • http://agentsecure.space/xotelajudy5y1g.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/af3184591.pdfIn PDF document text
    • http://raicen.com/dexakuzigijprv89.pdfIn PDF document text
    • http://zuxuvikewi.sportsontheweb.net/74071563298.pdfIn PDF document text
    • http://solusaxisabo.scienceontheweb.net/detite.pdfIn PDF document text
    • http://movasolusid.iblogger.org/tinkle_double_digest_1.pdfIn PDF document text
    • http://trickyturkey.com/a_monster_in_paris_full_movie_in_hindi_free_downloadx2jle.pdfIn PDF document text
    • https://satizuluvom.weebly.com/uploads/1/3/4/4/134481830/lugudupo_zawipuwalolowoj_jabalok.pdfIn PDF document text
    • https://kofavuzaxo.weebly.com/uploads/1/3/0/8/130873868/bavud.pdfIn PDF document text
    • http://creditreportus.info/todukudi0qjk9.pdfIn PDF document text
    • http://buzofenag.22web.org/ct_ghp_file_bng_foxit_reader.pdfIn PDF document text
    • http://cashthe.ru/creative_visualization_meditations_free_downloadcnslp.pdfIn PDF document text
    • http://lagujegivupani.22web.org/bojex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nozuwodapa.epizy.com/58164570738.pdfIn PDF document text
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_424f30e8f73843dfa3e66fe48fe0e98b.pdf?index=trueIn PDF document text
    • http://pagarome.rf.gd/rapprochement_bancaire_ohada.pdfIn PDF document text
    • http://sugexure.rf.gd/bevopasorobogudilevunib.pdfIn PDF document text
    • http://tuxijug.rf.gd/papek.pdfIn PDF document text
    • http://buzeliri.rf.gd/chalcedon_creed.pdfIn PDF document text
    • https://8cff94d3-ecab-4ea5-ad27-d3e67d02fd32.filesusr.com/ugd/2813e2_d6b6994395ae4174b4c75373b295f10c.pdf?index=trueIn PDF document text
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_77a066fa2fe04a2d8444817dbf0956da.pdf?index=trueIn 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_off0000f4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 5232 bytes
SHA-256: bed442b71338b7d5c1901fcbc7b602de19b55f52f89fe653fa7cc50aeacf13b3
font_01_sfnt_off000106d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D4 11108 bytes
SHA-256: 6626c4858bc6759ab28d9c3fdb80d494ebb6bb84791a606431096dbda258d1aa

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