Malicious PDF — malware analysis report

Static analysis result for SHA-256 607bfb7195bf75ef…

MALICIOUS

PDF

90.1 KB Created: 2021-01-16 12:17:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f893d0d8842ceb749ac01ba3574f72f0 SHA-1: e6136cf603f290c70028c448b7ebcf30eeb67eb1 SHA-256: 607bfb7195bf75ef600d3f4d112ed802c9941185d16a31832b638a38b12b60b7
184 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The ML classifier also flagged this PDF with high confidence. The primary purpose appears to be redirecting users to potentially malicious sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffking.ru/aws?utm_term=arap%25C3%25A7a+t%25C3%25BCrk%25C3%25A7e+kelimeler+pdf In PDF document text
    • https://site-1172602.mozfiles.com/files/1172602/2021_calendar_free_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388162/normal_5fc4b903a2b09.pdfIn PDF document text
    • https://site-1241413.mozfiles.com/files/1241413/chronic_bronchitis_treatment_guidelines.pdfIn PDF document text
    • https://site-1237389.mozfiles.com/files/1237389/56862953116.pdfIn PDF document text
    • https://jurulekoteg.weebly.com/uploads/1/3/4/7/134700509/2936035.pdfIn PDF document text
    • https://site-1168052.mozfiles.com/files/1168052/push_crowd_all_smash_ultimate.pdfIn PDF document text
    • https://cdn.sqhk.co/kixarozikej/chgz0vt/classical_music_station_bay_area.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383308/normal_5fe46da79998e.pdfIn PDF document text
    • https://cdn.sqhk.co/mawejoxejobe/hiVhV97/sumoxuvobupiguzawuj.pdfIn PDF document text
    • https://voxaxaloxedifuz.weebly.com/uploads/1/3/5/3/135399296/f49f872b0c.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
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000127f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x127F2 27136 bytes
SHA-256: d0d7052d5c8df91de004e7b340392ac445bb98401dc4a3e33452e6aa5a6167dd
font_00_sfnt_off0000c89f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89F 11852 bytes
SHA-256: ae60315ae2c519196acd2827b6985b710d168d5f5adb1c9711d1fcc1d7fc3712
font_01_sfnt_off0000eff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF4 5364 bytes
SHA-256: 5e131fef51f7d84774af5a12fd7d11a9fcc32d1d13d0ee20905b62ad3a89e6be
font_02_sfnt_off000101ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101EF 12536 bytes
SHA-256: 4711833bb5fb94ebc7b393b3554bee83e2949cdb5d5e9ae7cdec0ae854caddf5

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