Malicious PDF — malware analysis report

Static analysis result for SHA-256 9565b6de5171b0d3…

MALICIOUS

PDF

90.6 KB Created: 2021-04-01 15:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 82a421b96d5b2def7ef918e7e686241f SHA-1: 998a630da01b2b669fc4dab096baacaf349856a0 SHA-256: 9565b6de5171b0d3ead3e5457736b00f8cbcc8b40dbaa9ad46eb8e3a43a0865f
156 Risk Score

Malware Insights

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

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 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.
  • 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://vilenefex.ru/wix?keyword=letter+from+heaven PDF link annotation
    • https://zugimawaxudal.weebly.com/uploads/1/3/1/4/131410952/xakufezusos.pdfIn PDF document text
    • http://dinewegivogofe.mygamesonline.org/robinson_crusoe_oxford_bookworms.pdfIn PDF document text
    • http://betixisu.22web.org/20934457185.pdfIn PDF document text
    • https://faraguwu.weebly.com/uploads/1/3/0/9/130969294/b8bbded434911f.pdfIn PDF document text
    • http://womovenum.sportsontheweb.net/delhi_metro_map_2020_pink_line.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/gfyaHgf/skyblock_hypixel_tips_and_tricks.pdfIn PDF document text
    • https://cdn.sqhk.co/wizokawoxo/jjeiaWb/nisumapibetimiro.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/kPif2MK/89226983932.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/farazugok.pdfIn PDF document text
    • https://cdn.sqhk.co/tarudifirew/dzghfjg/limbo_video_game_walkthrough.pdfIn PDF document text
    • https://sulesebu.weebly.com/uploads/1/3/4/6/134634805/visobojobo.pdfIn PDF document text
    • http://nerixobetevo.iblogger.org/cesarean_section_2020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://winovewivigo.rf.gd/stored_procedure_in_sql_server_2020_tutorial_for_beginners.pdfIn PDF document text
    • http://juxugalipexobow.epizy.com/a_christmas_carol_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/how_to_use_lowrance_elite_5_chirp.pdfIn PDF document text
    • http://zefupolegemawak.rf.gd/tavebe.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/wamubuwovujikivorutesap.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/wepavebedazeved.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/datix.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/33874449407.pdfIn PDF document text
    • http://dopovis.myartsonline.com/nezizeziniza.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/genki_second_edition_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/312648941.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/cbrn_nco_duties_and_responsibilities.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_off000125fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125FD 4800 bytes
SHA-256: 04efbda938419e10ce2d84b4791661cf404c77c97e98a771f1186901a4065084
font_01_sfnt_off0001362c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1362C 11436 bytes
SHA-256: d1e30dd8a77b4369f323d92e36a04d63cb62bc4f7ab5eebb486b0d469948079a

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