Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c4e6268121c238…

MALICIOUS

PDF

79.0 KB Created: 2021-01-15 09:55:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6eb0b8341cbcb10948aacd3bca78db65 SHA-1: ecb9a6803d57875d4b19f109f5743665f55b30da SHA-256: 83c4e6268121c238dcc2be7b46cbd9c6c1d372226615b8d402cc6cfb8d2dd818
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffine.ru/123?utm_term=world+of+prandis+fishing+guide PDF link annotation
    • https://site-1179637.mozfiles.com/files/1179637/jefunopodan.pdfIn PDF document text
    • https://site-1174558.mozfiles.com/files/1174558/33479430718.pdfIn PDF document text
    • https://site-1221861.mozfiles.com/files/1221861/brady_label_maker_bmp21_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456119/normal_5fa23d5846845.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369499/normal_6000ecddac174.pdfIn PDF document text
    • https://site-1244739.mozfiles.com/files/1244739/biological_classification_envelope_worksheet_answer_key.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/voropa/vutoxiramonefetemiva.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/4421649375.pdfIn PDF document text
    • https://s3.amazonaws.com/sibenuvokiwuz/jack_williamson_darker_than_you_think.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/8697947166.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/hypertension_guideline_2019__facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/13782514627.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/womezuwakapavefixe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD705 5316 bytes
SHA-256: 168ade1d309c9369f4f438fb7be767519b0e231c1755dc62ccc1a342ae4e6161
font_01_sfnt_off0000e918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE918 1908 bytes
SHA-256: 7ebb7fae05c1c5e3686aa4fb22557e8a2c3f44dbcf4224edbd4655e8eeabfc2f
font_02_sfnt_off0000f269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF269 10948 bytes
SHA-256: 9be5fe7fba907148ed5ec7fafc506b04467314bb610996c0c0f9c6896fc75de4
font_03_sfnt_off000117d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D5 16060 bytes
SHA-256: 9fce2e558c7eba93e9b4ba87b790c422cf9490aab73fe875614431ac3e7f116a

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