Malicious PDF — malware analysis report

Static analysis result for SHA-256 54da9bb90a89b69f…

MALICIOUS

PDF

178.3 KB Created: 2021-04-05 10:42:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a2349f6ce1d4c03517862e8f9b0cf212 SHA-1: 56e3132e6e7fbe19e0da5f7e0277916ca95b5db4 SHA-256: 54da9bb90a89b69f38b99d69e5a0f149719e772dae3a307d65416e8971167c43
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 0.9997

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://golowaki.ru/wix?keyword=truman+elementary+school+norman+ok PDF link annotation
    • https://cdn.sqhk.co/votojuxosaf/dRjTjdF/migepozozi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423460/normal_6047c5ff60c7a.pdfIn PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/9613866.pdfIn PDF document text
    • https://kepuwizetel.weebly.com/uploads/1/3/5/3/135304134/d5a68ac434ddabc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381546/normal_603271845cc95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485176/normal_60233d5b32b34.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/hkiixhg/slither._io_mod_apk_android_download.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/remuv/podenome.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/nomination_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/memory_analyzer_tool_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/92900709643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cecaf078-1969-4378-a6ff-f218acf5f209/the_lottery_shirley_jackson_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/al_quran_tajwid_indonesia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9921e1c7-323b-4cd8-8fc8-579e1b40e5ef/4497383209.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/56845840891.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/rabipajinegagepuz.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_off0002849b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2849B 5152 bytes
SHA-256: 27e9b3e2e5f85468e4ed3aa3f830cac55ee0b97221a4a13b8320d105edbf8733
font_01_sfnt_off000295f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x295F5 11164 bytes
SHA-256: 3192e653c65365e98ec75930c1a940043b1e4e7768ac1c1a491b9cf8ca15d70b