Malicious PDF — malware analysis report

Static analysis result for SHA-256 1569c365f0db584e…

MALICIOUS

PDF

73.9 KB Created: 2020-12-24 08:45:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 389e7264d13ff8f9cd035ac311047aa2 SHA-1: ef14bdc25dfd795bb72810d93573010b661b2917 SHA-256: 1569c365f0db584e50bbb57555e414342887113e698bfac8d357a7776123b896
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=down+the+rockefeller+street+meme'. The document body, though heavily obfuscated, contains text related to 'Down the rockefeller street meme' and application metadata, suggesting a lure. The ML classifier and ClamAV detection further confirm the malicious nature of the file, likely as a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=down+the+rockefeller+street+meme In PDF document text
    • https://cdn.sqhk.co/xakawituk/jjgeMcN/44381313076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_5fa16bd477077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454681/normal_5fb862b2292ab.pdfIn PDF document text
    • https://cdn.sqhk.co/govovazeket/RhiTLEn/rock_music_youtube_channels.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wizedumi/96153477718.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/mimenapuruvedapapipave.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/you_can_fly_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/treasure_island_reading_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/double_bed_flannelette_sheets_sets.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/wurivam.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/eos_600d_manual_focus.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/1_prop_z_interval_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/descargar_animedroid_apk_pure.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/67156442445.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/vudebenonetajaren.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/wesiwisorepi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CB 4808 bytes
SHA-256: 05c5041961457d4a5030bec36d4ef882dcac8d8f9c69b08651e4d657bfe42a7f
font_01_sfnt_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 10272 bytes
SHA-256: 5172488480646add8e3c7f7e3f52ad52dfb7a2bff18722f2cfd8ecb2cfc76e07
font_02_sfnt_off00010c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C32 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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