Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee957376e719f257…

MALICIOUS

PDF

74.7 KB Created: 2020-12-25 06:08:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 068f717ab71fa55d36eb4708d7c6777e SHA-1: ecb5a793c071c0e3b2ac430d8d603fba8f95daf5 SHA-256: ee957376e719f257e75ec968a0ec2d692c99357fe5855299e04ffaca5d5cf41b
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, includes text that appears to be a lure related to a movie song ringtone. The presence of a password archive lure heuristic suggests the document is intended to trick the user into downloading an encrypted payload. The ML classifier also strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/aws?utm_term=bogan+movie+song+ringtone In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5f8967328b907.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375887/normal_5f89f7ad0161c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5f8e7a4ee6f8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450438/normal_5fb5a03b85a09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493602/normal_5fc06e485770a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5f8f188d0c930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447669/normal_5fc6f1228dcd3.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/rovuweraja/ziniwofofukodi.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/minetafunekatisamoxuz.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/abbasid_dynasty.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/shawn_mendes_houston.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/bluetooth_for_laptop_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/words_that_start_with_dream.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/brave_browser_android_flash.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/matevifoguniz.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/15094864414.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/48854801296.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_off0000e87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87F 5084 bytes
SHA-256: f1918e8ac097f63ae9c8f9630545f02a820a378157c21c15228ba9159d24c51c
font_01_sfnt_off0000f9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C2 10716 bytes
SHA-256: af2e400fc139ff28fe04af44efa5c10a6389b77965d9c8ee5afdeaf6c46c28f3

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