Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6efcf9de43a4dc…

MALICIOUS

PDF

70.3 KB Created: 2021-03-29 07:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85da6647e7fb02017b007958af2fdf95 SHA-1: bd749d1033f35ceb04393c0984ad94ef334b3f31 SHA-256: 7b6efcf9de43a4dcc0d6042199a4a19e026bf1e9252efabb553049f08de556bb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests an attempt to disguise the malicious content as a legitimate PDF file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/award?keyword=antrenmanlarla+geometri+3+pdf
    • http://danoguvu.medianewsonline.com/additional_mathematics_pure_and_applied_talbert_download.pdf
    • http://dhl-order.info/mlp_pinkie_pie_pornuq8en.pdf
    • https://cdn-cms.f-static.net/uploads/4373508/normal_60346e207911a.pdf
    • https://cdn-cms.f-static.net/uploads/4416664/normal_604063c5f0087.pdf
    • https://cdn-cms.f-static.net/uploads/4393514/normal_60498892efc07.pdf
    • http://vengriya.space/how_to_use_the_cooks_essentials_pressure_cooker8hove.pdf
    • http://getyourcredit.info/pandemonium_delirium_series_book_2gkha1.pdf
    • http://vaxisezawoged.scienceontheweb.net/sovasolawuxuxixuboweg.pdf
    • https://cdn-cms.f-static.net/uploads/4368781/normal_60205b51b3508.pdf
    • https://cdn-cms.f-static.net/uploads/4428045/normal_6025ed1f17917.pdf
    • https://cdn-cms.f-static.net/uploads/4380695/normal_6010f1560c2fd.pdf
    • https://cdn-cms.f-static.net/uploads/4366647/normal_604d89a105b81.pdf
    • http://nyvelsets.online/sa_hip_hop_hits_2020cbzwx.pdf
    • https://cdn-cms.f-static.net/uploads/4411252/normal_601b6e524d396.pdf
    • https://cdn-cms.f-static.net/uploads/4478402/normal_602d876db3186.pdf
    • https://cdn-cms.f-static.net/uploads/4476126/normal_6025012108abf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/76945f92-1406-4847-b23e-f76f9f508a6f/95457136834.pdf
    • http://dilabopitomosif.epizy.com/application_form_format_in_marathi.pdf
    • https://uploads.strikinglycdn.com/files/6c688c29-fa04-4652-a01d-2b3a79b4f47e/someremokasuluxakiko.pdf
    • http://moletilezozosi.epizy.com/js_interview_questions_and_answers_for_experienced.pdf
    • http://silagumurifexo.epizy.com/12043204.pdf
    • http://tolubilusavo.epizy.com/tudo_sobre_a_administracao_geral_tributaria.pdf
    • https://uploads.strikinglycdn.com/files/ee236875-5646-4748-aa0f-b9a2506ab69c/zotedunebunug.pdf
    • https://uploads.strikinglycdn.com/files/9e5048bf-cfc4-4b84-b416-75a769409238/39465278453.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5f5.bin
60acc94291aaef5e6a41f0210bf2c0461331b27e0ba080b09f561459b218099e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F5 5336 bytes
font_01_sfnt_off0000e80c.bin
fb65b58eeb9866d33cd84cf934015f8cd9072c6c7a9b5fb202de7a045c498120		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE80C 10680 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.