Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c50e6835bb1ccea…

MALICIOUS

PDF

244.1 KB Created: 2021-03-22 00:04:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 7bb97aba2c3fb38edee19ebd516f8698 SHA-1: c49da0fbce53421e3cac5caf636ab794f5e42832 SHA-256: 9c50e6835bb1ccea7629369028eacc70e67ea9ec874b5463f5fc079dcb8abfc2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting it. The document body, though heavily obfuscated, suggests a lure related to a subscription form.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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://ponafet.ru/123?utm_term=aigetoa+subscription+form PDF link annotation
    • http://robertferrell.net/milton_barber_shop_brooklyn_robberyxtmld.pdfIn PDF document text
    • https://molawaxurot.weebly.com/uploads/1/3/4/6/134699933/e48e8.pdfIn PDF document text
    • http://arbitestpark.xyz/11802752034vb852.pdfIn PDF document text
    • http://dom-bita.org/28730188491e8kui.pdfIn PDF document text
    • https://nozijuga.weebly.com/uploads/1/3/4/6/134698325/losoluzu.pdfIn PDF document text
    • http://gelchlen.fun/vidas_secas_graciliano_ramos_baixarjclol.pdfIn PDF document text
    • http://opencabinets.xyz/how_to_draw_awesome_things_easy3vyri.pdfIn PDF document text
    • http://grandov.pro/sierra_bullets_reloading_data_243_winvqab3.pdfIn PDF document text
    • https://vijujaluju.weebly.com/uploads/1/3/2/7/132741375/03fed2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_4862ecd84beb4754933a7feaba8f7d93.pdf?index=trueIn PDF document text
    • https://6f8cb219-4830-455d-9ced-b55e65700e85.filesusr.com/ugd/fd30ac_d3809951860a48a39f1023602c8d73bd.pdf?index=trueIn PDF document text
    • https://4cd5eafb-d261-4666-a528-29b55b1676c1.filesusr.com/ugd/8dde66_23fe4b52ee5f4060870111310d735675.pdf?index=trueIn PDF document text
    • https://9387bd13-3746-4408-b474-2867f26e464d.filesusr.com/ugd/ace02d_093869ec94954fbeaf87b2d186ea7d47.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wixatax/what_does_sun_symbolize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c7d9dc7-dca0-490a-8d5a-ec0e25186f33/96226273247.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32758a13-42c2-43fd-85a5-8b1d10f4dfb4/wupenolabimofu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07d928ee-59a7-4ff4-ae42-4c8ee0209009/is_indian_stock_market_open_on_new_years_day.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/ritovexatopap.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000363c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x363C7 5432 bytes
SHA-256: 9b0c4afaa46ec747184382ad502fd16bc67356b70477b0d73dce1118acd37b6c
font_01_sfnt_off00037632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37632 11616 bytes
SHA-256: edddbfaec53b486919849ab89c273121e879f8128cfd79ea5f7858664f24b5b0
font_02_sfnt_off00039d64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39D64 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_03_sfnt_off0003b2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B2D0 3144 bytes
SHA-256: 1d76ee4bbef665efe3f16ca7892d1d66472eebf5975c6ac251d88b1facd3f97a

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