Malicious PDF — malware analysis report

Static analysis result for SHA-256 c419f557480f270f…

MALICIOUS

PDF

191.4 KB Created: 2021-01-03 08:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 91d14ec594d8774ae9f05b3f4838dc00 SHA-1: 2b1d28abfc4ce66cfa3df15c3147eab037a7b3a1 SHA-256: c419f557480f270f1e91d29c43c25acee128f40a61ca1298cde43608d3ddc32d
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=d%2526d+5e+monster+manual+pdf+online'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/123?utm_term=d%2526d+5e+monster+manual+pdf+online In PDF document text
    • https://cdn.sqhk.co/vujalenan/bhfwnhe/fezuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_5fbbe7f2ebe14.pdfIn PDF document text
    • https://cdn.sqhk.co/sorubajuzoxe/TRggiyT/bloody_bastards_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/eVnEIjc/falling_in_love_netflix_wiki.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
    • https://s3.amazonaws.com/nerugiraxura/72694352191.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/the_intouchables_theme_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/la_clase_de_espanol_es_la_mediodia.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/koranemolisalo.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/high_red_belt_form_taekwondo.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/5e_ship_passage_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/estimating_worksheet_4th_grade.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00029218.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x29218 18396 bytes
SHA-256: 9796a30fbd2bd2f68146ca09d605b6448194776730df21855facc57fd0fbd521
font_00_sfnt_off000283f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x283F3 4156 bytes
SHA-256: 58eabb24298f18ab3cb5c3f3a5652a185830994b36fd37cd9ad46fcf77495092
font_02_sfnt_off0002c2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2BD 14956 bytes
SHA-256: e1bb153f2dc6e7469d8c903fb27e0e26ebbe297fc685c13ab9456c6c827366a6

Open this report in the interactive analyzer, or submit your own file for analysis.