Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ad1ef4807d42ea…

MALICIOUS

PDF

75.7 KB Created: 2021-03-21 21:46:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dc9ad196301f2d6ec510c8c46e9090d SHA-1: e556b34b137172bfaa3555e21d1ca65b3f2db955 SHA-256: 95ad1ef4807d42ea9e937c61c9367604a9c496438bbe4e613f67cbc608b5e7f1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used to host phishing content or download further malware. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/wix?keyword=verbs+that+start+with+pro
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/7572648.pdf
    • https://cdn-cms.f-static.net/uploads/4412568/normal_605682e629175.pdf
    • https://nepokotivo.weebly.com/uploads/1/3/2/8/132814168/88615e9d.pdf
    • https://xobojurum.weebly.com/uploads/1/3/4/5/134599739/1e869.pdf
    • http://ing-jobs-opportunities.com/in_cold_blood_audiobook_free_download3oud2.pdf
    • https://damanula.weebly.com/uploads/1/3/1/8/131856109/guvofetel.pdf
    • https://purabadixubemik.weebly.com/uploads/1/3/5/3/135399060/gegenukon.pdf
    • http://perevozka.ru/what_is_the_purpose_of_mapping_pros_and_cons_of_an_argumentpy545.pdf
    • http://lnstagramsupportlives.com/double_contrast_barium_enemap979n.pdf
    • https://cdn-cms.f-static.net/uploads/4408346/normal_5fe770d20c719.pdf
    • https://cdn-cms.f-static.net/uploads/4457305/normal_603962910c649.pdf
    • https://cdn-cms.f-static.net/uploads/4417808/normal_60202ef314a39.pdf
    • http://kubojep.iblogger.org/dawn_of_titans_mod_apk_mali.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tozaduliwubega/skyrim_meme_100_template.pdf
    • http://fadakivok.rf.gd/73570854797.pdf
    • https://uploads.strikinglycdn.com/files/9ce2afab-4da8-4a56-81a4-c8a7104d7560/a_natural_introduction_to_computer_programming_with_c.pdf
    • https://uploads.strikinglycdn.com/files/5941a976-9572-4686-9181-ba363f49f501/keroperokajokudoviweba.pdf
    • https://uploads.strikinglycdn.com/files/d1031b6f-4947-4010-afc6-41c3e1d5ceaa/batigud.pdf
    • https://uploads.strikinglycdn.com/files/9b620214-cf31-4933-8702-914fef6546c6/duvebukutogawerelemiveja.pdf
    • http://lofupiwosilabo.epizy.com/abdullah_ibrahim_the_wedding.pdf
    • https://s3.amazonaws.com/liluvad/conversion_of_units_worksheet_with_answers.pdf
    • http://nenunosulijud.rf.gd/scaly_anteater_pangolin_information.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_off0000ee20.bin
3148b297786b0d693e7071f1fbad242d4be676be5c26a5b803318b53ce011b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE20 5072 bytes
font_01_sfnt_off0000ff68.bin
f4e777e238434d6f84b971131b97974bf90d843aa5c6e74e2b2bc035827104f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF68 10036 bytes

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