Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e59c9ffeba292a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-20 23:45:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c786e982b28cff6c2beaa768fe5b5991 SHA-1: 2a2c39fc76175e220a8ff0f8356a1a97f8b4163a SHA-256: 08e59c9ffeba292a158e486a114d81f39fe3509b57acae376e8c107c712223e4
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number flagged as potentially malicious or unknown. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=complete+psionics+handbook+3.5+pdf PDF link annotation
    • http://de-bewertung-id2842384.icu/adobe_photoshop_cc_classroom_in_a_book_2018_releasez45ki.pdfIn PDF document text
    • http://pipvip.ru/poetry_definition_of_ballad_stanza8jgmf.pdfIn PDF document text
    • https://suzazenesegi.weebly.com/uploads/1/3/0/7/130776168/povuxubigin.pdfIn PDF document text
    • http://pc-remont.website/how_do_i_make_a_wordle_onlinewbmm1.pdfIn PDF document text
    • http://rabota-plus.club/kutod9fhkm.pdfIn PDF document text
    • https://tabekemaw.weebly.com/uploads/1/3/0/8/130874329/3c083e.pdfIn PDF document text
    • https://vamalogobiw.weebly.com/uploads/1/3/4/6/134696595/bb7d32f52e90c.pdfIn PDF document text
    • https://lupiwofuguneb.weebly.com/uploads/1/3/4/7/134715795/6720492.pdfIn PDF document text
    • https://lesorini.weebly.com/uploads/1/3/4/3/134376350/wiwemam.pdfIn PDF document text
    • http://vertigoa.online/921522598360owp7.pdfIn PDF document text
    • https://josabinisepev.weebly.com/uploads/1/3/1/4/131452942/217114c80e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pomaxa/how_to_use_tailoring_machine.pdfIn PDF document text
    • https://93655b3f-791c-4b17-adcc-ca91401ac088.filesusr.com/ugd/99b222_30f3286bd14040bfb00e87b4dd07533a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/67450547957.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/dancing_ballz_hacked_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/top_high_graphics_android_games.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/avery_template_l7162.pdfIn PDF document text
    • https://77bc4ea4-de20-41c0-a463-a5315db628d9.filesusr.com/ugd/2c69e3_d97149070be94c269930d8758e67f922.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tevomenil/atem_television_studio_hd_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/kamodogebibi.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/automobile_engineering_designing_software_free_download.pdfIn PDF document text
    • https://f459ab6e-ac57-43ce-b83a-1524846427e4.filesusr.com/ugd/938c70_c44507d9252d4fc48e841d30ad105d2a.pdf?index=trueIn PDF document text
    • https://0c7ecde5-8d52-4b6d-bf00-bcb9beb5fd3c.filesusr.com/ugd/b6f5a5_3b09c757850f4df58f42c708aaa7ad18.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xeponodij/percy_jackson_sea_of_monsters_graphic_novel_online_free.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED81 5636 bytes
SHA-256: 5b955add55a8a39271924c29f51607f00cd59c87e558005aa4e902a195b3f3d4
font_01_sfnt_off00010082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10082 10632 bytes
SHA-256: b5faec105b36f301d391b51a118822689b6681fb7351a89be27e0069db2c775d
font_02_sfnt_off00012509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12509 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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