Malicious PDF — malware analysis report

Static analysis result for SHA-256 c552ad5f166dd78d…

MALICIOUS

PDF

111.8 KB Created: 2021-01-10 00:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7c121cf9dfc756dbc6b201de8168e526 SHA-1: c279bb72b8ba40388cdf1e007cb81f0ca9a7f9ef SHA-256: c552ad5f166dd78d500b4b3b5c329d203fb2b49976cf252d328531e83b396a6b
96 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 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-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://traffset.ru/aws?utm_term=bhole+baba+chilam+photos PDF link annotation
    • https://site-1204748.mozfiles.com/files/1204748/37446935003.pdfIn PDF document text
    • https://site-1172079.mozfiles.com/files/1172079/83268875631.pdfIn PDF document text
    • https://site-1175781.mozfiles.com/files/1175781/diaphragm_pain_covid.pdfIn PDF document text
    • https://site-1168172.mozfiles.com/files/1168172/turapitamivuxune.pdfIn PDF document text
    • https://site-1168409.mozfiles.com/files/1168409/perfect_color_roll_3d_free_online.pdfIn PDF document text
    • https://site-1177351.mozfiles.com/files/1177351/autoradio_gps_2_din_android_10__1.pdfIn PDF document text
    • https://site-1167988.mozfiles.com/files/1167988/hustle_castle_hacks_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/antagonista_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/fight_list_answers_synonyms_for_hungry.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/33120815519.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/inventory_management_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/14153643227.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/endnote_online_plugin_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/gutufijali.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://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001244e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244E 11908 bytes
SHA-256: 8ec6bdf9d8c5ab8c03565d0a0550b7b274024c2b7b674741f8c6041efa6c3e0d
font_01_sfnt_off0001491e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1491E 5268 bytes
SHA-256: 3815ae7adc23762470fbcd7e55b3ceb4f5317e7d8df714b6a95367fda43283e5
font_02_sfnt_off00015ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AE5 10336 bytes
SHA-256: 4c28c2d3cacd3a30e2335444bf23c7e383dbd5a4b5405bb4f80cf299678103ca
font_03_sfnt_off000170e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170E8 13832 bytes
SHA-256: 09ae2b88281fa2be259751f4a88c7118f3adeff699372eafdc11b6d6767cd3cd
font_04_sfnt_off00019bce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19BCE 6360 bytes
SHA-256: d412020220158ef3017d48839386d1d99333d11c364bcb63a1ca0fd157f498f3

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