Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e08187cb5ec99f…

MALICIOUS

PDF

83.7 KB Created: 2020-12-22 07:01:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: e2b0f6e39c67084618ffa396ee81077a SHA-1: 9b44644e4d4b4416dcc128f180ab40560ce17097 SHA-256: d2e08187cb5ec99f19e3b61c99198af83bd2f2fcaf1c13e1cb1079ed5d60ce55
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain. ML and ClamAV heuristics strongly indicate maliciousness, classifying it as a phishing trojan. The presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/123?utm_term=hunt+county+appraisal+district+phone+number PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370740/normal_5fd76f9ab534e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476133/normal_5fbf06bba6d1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408324/normal_5fa86fcfdb0fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485699/normal_5fae4b7389acc.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/acfbee26-492f-472c-9019-89d008893c16/lurawug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/949fe779-e8c6-42d5-97b8-8818d8015e4d/werewolf_game_cards_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973fdfed-277e-4e55-89a2-982fa191d358/vogovafil.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/g.co.a.2_worksheet_1_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a035656-cfad-4636-a1ff-bca5ce381b7d/kafedolijupofemudakuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1938ac43-8935-4fc1-aa95-a8cbc07b8992/dotomesumufuzewutuwux.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc066bd9955c744b5390948/t/5fc254924e98326c025c5030/1606571157103/33604839019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2ebd651-64ea-48a7-bbfa-c99fc99c6f93/rosowodevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a877ea7-be7d-4c74-8b52-70320fcaa9fa/power_rangers_dino_thunder_hindi_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe11ecc0e0ba31f9ebb695a/t/5fe13331e3486d27204564ae/1608594227167/pumizumutetetixejiwusipo.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF09 6416 bytes
SHA-256: a497fc52ef216d2369a1cda088bdeb49e1b2edea4e2999984a7939df6a238a3e
font_01_sfnt_off0000ded3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 5400 bytes
SHA-256: 1008d230d34bfa43b4a4a2c408ccd7968f85f71cb66a6f70fa796be59249aa5e
font_02_sfnt_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 11788 bytes
SHA-256: c8fa5c8c98f7d722de6874d61b8617f62e523741675b5f5b550e6aba2c36b7d7
font_03_sfnt_off0001189a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1189A 17112 bytes
SHA-256: cffd7864d030b9e377128ad5926122580bfd4825dc2a0416c430aea9a19993e6
font_04_sfnt_off0001310f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1310F 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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