Malicious PDF — malware analysis report

Static analysis result for SHA-256 903933701ce06116…

MALICIOUS

PDF

74.6 KB Created: 2021-03-03 08:44:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: be68a180039ad9c67b6d295a59b08ba6 SHA-1: 77e88d13c8e70e3ca97fb7cf591286ed2fc6379c SHA-256: 903933701ce061161aa294314a2bd0c564a505c09b21a318a85aad04648d6922
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, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'gimoguvi.ru' suggests the document is designed to redirect users to a potentially harmful site. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware delivery attempt, likely leveraging social engineering to trick the user into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=essentialism+greg+mckeown+amazon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498702/normal_5fd8068d2c4bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413696/normal_5fe04b7b470de.pdfIn PDF document text
    • http://goshop32.site/dell_latitude_3400se2jk.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/tropic_of_cancer_movie_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_601d80a20b6a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421200/normal_60374e80e212a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376856/normal_6001fd9c5e381.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497658/normal_5fcaa1d2f34ff.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/new_navy_jet_trainer.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/jixerubowi/15600398043.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/statistical_data_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/asus_rt-n66u_firmware_dd-wrt.pdfIn PDF document text
    • http://bexukavibume.myartsonline.com/petsafe_yardmax_transmitter.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/71421966073.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/ctet_answer_key_2018_paper_2_sanskrit.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_off0000e6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C0 5284 bytes
SHA-256: ee077336143764066eb6c42e62777430c3aaa1a7598db90740c3643ff79603d2
font_01_sfnt_off0000f8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C4 10692 bytes
SHA-256: 187ecd8a807e261a911753f1aeb154c8f6c06906bb3a5c29acabc271070ec371

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