Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c1de6ede5ce3517…

MALICIOUS

PDF

108.9 KB Created: 2021-03-17 21:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 72c8737e0df96cf3aa9163e1f1f81f26 SHA-1: 0eb80c62eeff31b7421fefa60cf3901b337edcdd SHA-256: 6c1de6ede5ce35173a171faa09e005f18eaa045d7d9a107b8b0c38d2804ca2c7
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. The document body, though truncated and obfuscated, suggests a lure related to 'genetically modified crops pros and cons pdf', likely intended to trick users into visiting the malicious URLs for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://xezojetit.ru/award?keyword=genetically+modified+crops+pros+and+cons+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418778/normal_603f3d2cddbda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426830/normal_5fec422aa49c1.pdfIn PDF document text
    • http://widevuvi.22web.org/encyclopedia_judaica_vol_22.pdfIn PDF document text
    • http://mabay.fun/bluetooth_app_sender_for_pc7u2xc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382423/normal_602ef5e610cc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403262/normal_5fca9fe1ec9a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496402/normal_60402b8079d8f.pdfIn PDF document text
    • http://laulu-go.ru/nujatubazagifazowezava5se7t.pdfIn PDF document text
    • http://ndfnasg.xyz/finnegans_wake_bar_puerto_del_carmenkqqyh.pdfIn PDF document text
    • http://sorebifisawug.22web.org/alleluia_psaume_117.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://uploads.strikinglycdn.com/files/dbb16116-d405-4fca-8d18-77109c2c74d1/nopotub.pdfIn PDF document text
    • http://judimavazamo.epizy.com/96564921096.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/chicago_manual_of_style_bibliography_multiple_authors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7355684-8db5-4586-876c-20493475f08d/pogagipefawetim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbaa0814-55d9-45f0-b5bf-2009a7f4f7db/yaskawa_ac_drive_v1000_manual_portugues.pdfIn PDF document text
    • http://riperuzitino.rf.gd/questionnaire_on_working_capital_management.pdfIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_5e63856bd282467d9fef67d196d61e25.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/is_dubai_visa_free_for_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/3508209966.pdfIn PDF document text
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_7bb23381d0704e798428240e0d2beee8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EB6 5224 bytes
SHA-256: 873f9dee1ed635c5faefd2b36bb439476c90cbb5633bac61f95ab7745ce3f4f1
font_01_sfnt_off0001706b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1706B 11568 bytes
SHA-256: 021490c35234d0797790660901b02f4712598d1b431fcf0f389df99a5b0c5489
font_02_sfnt_off0001970d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1970D 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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