Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d9e5808cfd8358…

MALICIOUS

PDF

88.3 KB Created: 2021-03-25 16:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fa602afe4c068ab4268cc11b0af716ff SHA-1: 18acd0c716987cc490bd8550755c08ccf96bb7bf SHA-256: 00d9e5808cfd83580dd9b80bc1ea78fcbd4c187a31ccc20080bb0ebf9f90577a
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, suggesting an attempt to manipulate search engine results or direct users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous external URLs points towards a phishing or content-luring attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=moog+one+vs+subsequent+37 PDF link annotation
    • https://cdn.sqhk.co/tuzukada/Hjdijii/ganaton_itopride_hydrochloride_50_mg.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujutenifo/hc6ihji/fapegedab.pdfIn PDF document text
    • https://cdn.sqhk.co/batumozi/dxeheia/butajixad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vojapu/24304928154.pdfIn PDF document text
    • http://minazefawubiso.epizy.com/what_is_the_instrument_used_to_measure_body_temperature.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/jepedifupazeju.pdfIn PDF document text
    • https://a9f3490c-def6-45ea-9957-aefa341d54bd.filesusr.com/ugd/84b587_f206849c009f4b76acf38749a019f0bf.pdf?index=trueIn PDF document text
    • http://luvubarebefu.rf.gd/mi_primer_libro_de_fisica_cuantica_descargar_gratis.pdfIn PDF document text
    • https://4edd92ed-4e96-4c3d-a837-a16c7246ae9e.filesusr.com/ugd/7c3149_1db8b158997b47aa89ec8b4099208987.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/woxorojero/21943719113.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/how_to_get_my_ingenuity_swing_to_swing.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/what_was_the_main_theme_of_the_island_of_doctor_moreau.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/uos_b._a_challan_form.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/wuwafo.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/robapofamuwise.pdfIn PDF document text
    • https://1b53f64c-3596-40ff-86ea-95cec8902569.filesusr.com/ugd/838e7e_60b8e36813534deebdb9b4c2f73e5490.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/remufuzu/thermometer_calibration_record_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/71483306634.pdfIn PDF document text
    • https://7ef7ebf0-bcb0-4ca2-8538-5a19c3e9f01c.filesusr.com/ugd/aff7ca_b7a19b1893334460ad1eb4a10dc301d6.pdf?index=trueIn PDF document text
    • http://nejowubixulifud.rf.gd/new_army_5_paragraph_opord_format.pdfIn PDF document text
    • https://a2ae8793-a99f-480d-a3bc-849ef63d34f7.filesusr.com/ugd/cc207a_46d99d3c1be544509870fc07bdedcf58.pdf?index=trueIn PDF document text
    • https://dc5983eb-04eb-4341-be6e-5f763cf8c8d0.filesusr.com/ugd/979c04_8d9e5337cbae40a8ba4c1d1dd4e0cedf.pdf?index=trueIn PDF document text
    • http://mejuton.epizy.com/addition_facts_worksheets_2nd_grade.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/62948449660.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011c78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C78 5088 bytes
SHA-256: 6c72e2988957eb282dc93290273d93c41fbb90dfe714cf8fdf08382700634d42
font_01_sfnt_off00012e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E03 11376 bytes
SHA-256: 7f5ad4c0624b5aaf5c3b5249b7ff16fdf8f0b6f3dd640e893a9d7d0fe15908dd

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