Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2c3f1a61e3b553…

MALICIOUS

PDF

80.0 KB Created: 2021-01-12 17:02:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bacc346b30d56f6dec351a2b70713b28 SHA-1: efcf95bd5356d41964daa06c13d0e397b81e655f SHA-256: 8c2c3f1a61e3b553a607bd01898689dbbda6da8470f0f5b968e3778c27ca3b5e
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://cctraff.ru/123?utm_term=lahore+postal+code+cantt'. ClamAV also detected the file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'. The document body, though heavily obfuscated, suggests it is intended to appear as a benign PDF, likely as part of a phishing or malware delivery scheme.

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
  • 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://cctraff.ru/123?utm_term=lahore+postal+code+cantt In PDF document text
    • https://cdn.sqhk.co/kagurase/2h8CgfU/mens_short_hairstyles_2020_with_beard.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/Xjchgja/79906244309.pdfIn PDF document text
    • https://site-1166042.mozfiles.com/files/1166042/pot_stickers_sauce_name.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwonesi/jajihgf/november_2020_election_ballot_texas.pdfIn PDF document text
    • https://site-1178425.mozfiles.com/files/1178425/lojulage.pdfIn PDF document text
    • https://cdn.sqhk.co/lerotakisisa/Qhbl3id/63129136736.pdfIn PDF document text
    • https://site-1229407.mozfiles.com/files/1229407/aarum_kaanathe_yaarodum_sollathe_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/gc49haK/youtube_to_mp3_android_2020.pdfIn PDF document text
    • https://site-1176357.mozfiles.com/files/1176357/photo_editor_app_2020_apk.pdfIn PDF document text
    • https://site-1173584.mozfiles.com/files/1173584/73244801712.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/xijalovelokolep/cardinal_newman_6th_form_open_evening.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/kopeg.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000e6f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE6F3 14396 bytes
SHA-256: 3167445a970ba5e4616c222a4590bb281f9c7b371eb493ceeb64fb060f650b98
font_00_sfnt_off0000d5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A9 5104 bytes
SHA-256: fa936261ccd9a04608390e0287c6e626edaaabb843964977290b61076912803f
font_02_sfnt_off00010efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EFC 10676 bytes
SHA-256: 1ddd7561e2332b58269c3068339dd6e5065fb591ff6c1626f2df419a015e4467

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