Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70cbf3a9816b56c…

MALICIOUS

PDF

178.4 KB Created: 2020-12-14 22:14:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0236432cc027500e691143d87b2eed56 SHA-1: bc1fadb427107db8bf370fc6bc425a822a22899f SHA-256: e70cbf3a9816b56c3991e48e354e2d7fcab259356dd50b565a94a08f9629fff1
154 Risk Score

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=i+tell+you+what In PDF document text
    • https://xisegebimir.weebly.com/uploads/1/3/4/3/134340076/a8f86.pdfIn PDF document text
    • https://besuxape.weebly.com/uploads/1/3/4/3/134374749/27fc4cf15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455405/normal_5faf112843dee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501634/normal_5fbebd96a9f02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5fd06371afbe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382412/normal_5f9257f4a2e17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408355/normal_5f98eede0ca96.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://static1.squarespace.com/static/5fc6fcd4d8c3650128350c97/t/5fccd50574a40730fb97a99c/1607259401813/playstation_4_software_for_pc_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/32485389689.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc013b624b06a7eb3fa8a9b/t/5fc100f6e18c5c478e1f7dfb/1606484220867/tilatalawevotigo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4de0ebda9c57a97d7936f/t/5fd037f289fd2c07d1fc383c/1607481331223/huawei_health_ios_pantip.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/xagezasab.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/dub_houston_car_show_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/3651857229.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bb02085bf90c0e0909f1/t/5fc8fa6922891c6875ca9b25/1607006825278/my_airtel_tv_app_download_for_pc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d2f2d26ff1194f734ddd/t/5fc14ce1e6d49a06bbc243c8/1606503649198/24155036365.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5227e085bf90c0e189f60/t/5fc9dae285627875175cfd9e/1607064292706/mumezugapaliwupeguwokob.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001f68b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1F68B 11476 bytes
SHA-256: 3f0d7e1accee76a89fb48683e5ddb1730c259e95fbc7d205d3ec6a5ff0d0ccac
stream_007_off00026633.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x26633 28700 bytes
SHA-256: 3ed9fc48e8b9ab892910946dfcbeaee9485b2c6decaed13e16b12d855b2c92e0
font_00_sfnt_off0001812e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1812E 32068 bytes
SHA-256: fcc18998785305797adc83d5fcbdab573e9bd43d806e9e19d377359295ce68b0
font_01_sfnt_off0001e6c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E6C2 4628 bytes
SHA-256: 78c020832b07f06c91740eddf904bdbfc148170029365f979fdca1bcc4385285
font_03_sfnt_off00021683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21683 31176 bytes
SHA-256: 759c455497a38b4783f08fba4503210cdd63f006e5beb765e29041e8c0d5ff80
font_05_sfnt_off0002994c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2994C 9868 bytes
SHA-256: 47fc50e06470fed0f1daa392af1bc4b2ef4ce545454f2f36e7616b14b45d0e69