Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87fc4f07ec911e0…

MALICIOUS

PDF

76.6 KB Created: 2021-02-26 18:58:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 31487cd2efd092981e71621888069b61 SHA-1: 68e36a80c5cf480d65aea4b38910ad522e2ef21f SHA-256: a87fc4f07ec911e09103385cfaa6657ce5752328aca814935a10fe45fc59e555
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious content. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, appears to be a lure related to book order, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/award?keyword=what+order+should+you+read+the+after+books PDF link annotation
    • http://nnorm-id.com/equivalencias_de_pulgadas_a_cm1guby.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/how_do_you_use_a_farberware_blender.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/wokojoxe.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/aztec_number_system_converter.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/39365821179.pdfIn PDF document text
    • http://stixlife.info/41151921398ynvcx.pdfIn PDF document text
    • http://italy-small.space/cedulas_de_auditoria_formatos_excelun3vl.pdfIn PDF document text
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/wobavodoxaj.pdfIn PDF document text
    • https://pafetuvuwube.weebly.com/uploads/1/3/4/3/134321561/9455132.pdfIn PDF document text
    • http://cosmicgig.com/is_roomba_e5_compatible_with_alexapffxq.pdfIn PDF document text
    • http://rifivejawix.22web.org/employment_application_form_free.pdfIn PDF document text
    • https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/nerogobulinufig_fubudos.pdfIn PDF document text
    • https://nemapawa.weebly.com/uploads/1/3/0/9/130969411/rovolifizotix_bikoleda_baroxapere.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/93f37038.pdfIn PDF document text
    • http://xobezised.iblogger.org/dj_wala_babu_cartoon_video_song.pdfIn PDF document text
    • http://pasasem.iblogger.org/kedoxamozatetag.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/divexikav/bets10_giri_mobil_apk_indir.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/candle_in_the_wind_easy_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/love_anniversary_images_hd.pdfIn PDF document text
    • http://sasukagisodubex.onlinewebshop.net/76390424705.pdfIn PDF document text
    • http://danesanifulen.rf.gd/how_to_check_nmap_version.pdfIn PDF document text
    • http://sabinozugi.epizy.com/genativedutibexejuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/mandala_bed_sheet_near_me.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_off0000ef50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 5316 bytes
SHA-256: 6e1237ee16011c11b7e529a77381fd2ecda1a703086b9bc45f11cccde182fb1e
font_01_sfnt_off0001016f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1016F 10316 bytes
SHA-256: edbb35570bb18953437c58b3725aad08f19b35aa08fadb8aa8166e5681f1a245

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