Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d3254386ce7642c…

MALICIOUS

PDF

185.2 KB Created: 2021-02-03 03:03:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 5c52ce5ee89352901bef86cceaf80047 SHA-1: 1f4ffdcc37bf34c431a0f67ae34e6736417d09b1 SHA-256: 6d3254386ce7642cf9865b90688c346fa7e2d6939487efbf4390554b91ace44c
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware download site. The presence of multiple embedded URLs and the nature of the detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9095

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://baarspo.ru/123?utm_term=d%2526d+3.5+cloak+of+spider+climb PDF link annotation
    • https://cdn.sqhk.co/vosiwuli/jgghcjj/legends_of_runeterra_rank_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/pasededi/bk8hdWG/oneplus_new_buds_leak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389097/normal_5ff1762686cb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505358/normal_6001a9a89886a.pdfIn PDF document text
    • http://auto-fishing-rods1.club/fufugirafilug8spgz.pdfIn PDF document text
    • http://teachersaid.fun/lowibewabowotidetilokonop0ct.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/bhCgcct/renaissance_style_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/ZgdjbLM/21476925483.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/YOjiicr/craftsman_plastic_tool_box_lowes.pdfIn PDF document text
    • https://cdn.sqhk.co/katutilit/i6gihgg/3d_driving_class_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fcbfff9a25c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_010_off0002c4ef.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C4EF 6504 bytes
SHA-256: f8ebae8ea2381a5f5a5db4f03c6c737f92a142e66c67ccbdc2f7fea2b5259cac
font_00_sfnt_off00023b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B35 7516 bytes
SHA-256: 76f34301b0f0f3260df63e8e06ee417912ceebc1ec9b161224d906abd4afa021
font_01_sfnt_off00024eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24EB9 3148 bytes
SHA-256: 3d18dca7e3151ab78b523ac4104e86b88c6789bd7feb2b9d7711bf9cdfa03466
font_02_sfnt_off000259f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x259F9 4156 bytes
SHA-256: 4137e011fb50e940388b7a91a31e36f70741d8ce55ef6fbc7fb0314564e06879
font_03_sfnt_off000267e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x267E9 6280 bytes
SHA-256: a3b179770175167fc105d601e782d97fe9fd5fdbff0be5084ea02020e73dba2c
font_04_sfnt_off00027751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27751 18868 bytes
SHA-256: 15588422ccd0d87b457637cc4dc6efcd4d1b64187179c2559c9fb564f2a178d9
font_05_sfnt_off0002adb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ADB1 16652 bytes
SHA-256: cdba9ae88036a568647f7203d11e4e8151042a554c27feb2531898e9e544040e

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