Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae30dd4aaec0cf09…

MALICIOUS

PDF

75.6 KB Created: 2021-05-24 19:45:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 93a71b095dd1b3baa7b97a7d4c267cbb SHA-1: 281f3176a4fa5d141e440a7e8d160b86d789577f SHA-256: ae30dd4aaec0cf09c6bf313d9793b08b2179aa030ac33c965321ae4ce09f3ba9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains keywords related to a thermostat setup, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=filtrete+thermostat+wifi+setup PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451930/normal_605d4d19869f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404524/normal_6045e55eaf810.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385198/normal_5fc603a66f53f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495391/normal_60307e9bdefc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459470/normal_60279249191c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413238/normal_60198f350545b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385206/normal_5fef0d546c584.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/wiremeresegikon/33283320540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f1e966-9b49-40cc-97c5-eb19f7a81580/valor_comercial_de_capacitores_ceramicos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0612aa05-238f-47e8-8a9e-1472b87d4cee/89656165646.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f13448d-bf7b-4830-8605-17009e3a313a/medaruzixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edb315f6-0687-4144-a483-6c246bc06c63/30343664459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4766e03-6f7d-4103-9463-d2ea8fb86b7a/thermo_king_tripac_apu_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/77090567801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afdd96c0-714f-45f4-8e2a-24c92558d8dc/vaxaleku.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/dekezemujewoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a4cf273-6d35-42e8-83e5-2928ea983aee/how_do_you_retrieve_voicemail_on_a_vtech_cordless_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/bonjour_for_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de2f2da2-62f7-40e6-baef-838ab8d29c14/how_to_get_rid_of_a_cystic_pimple_fast_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/bonuxafedav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4488c14-39e3-45ab-a999-02d5f8bce9a8/descriptions_the_color_of_sunrises.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_off0000e88a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE88A 5188 bytes
SHA-256: 093e14562292c61f5f637171a9e1c8abcb569e27075420ba145d15b5bbbce18c
font_01_sfnt_off0000fa17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA17 10908 bytes
SHA-256: 0ba926e1bbf5c3948173d715ebebd2799c8f620f889d98a623a25e3f954e9d12

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