Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46a34723a19f7af…

MALICIOUS

PDF

82.4 KB Created: 2020-11-09 20:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcae05adadd6817747786b3b0f9a6e8c SHA-1: 19ca268990c53ebbd0d7343e4038533c3829b5cd SHA-256: b46a34723a19f7af67f20e080010c48f7e799472adbd4bff453c01e5318eaaa6
234 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm with numerous embedded URLs, including one pointing to known malicious redirector infrastructure (ggtraff.ru). The presence of PRC/3D content and the ClamAV detection further support its malicious nature. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/aws?keyword=vegas+prop+bets+for+super+bowl+2020
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f9bdd08af25b.pdf
    • https://cdn-cms.f-static.net/uploads/4366627/normal_5f9060c156a70.pdf
    • https://kipuxemoxux.weebly.com/uploads/1/3/4/6/134616309/1173661.pdf
    • https://cdn-cms.f-static.net/uploads/4410211/normal_5fa86cdbeff46.pdf
    • https://cdn-cms.f-static.net/uploads/4405181/normal_5f944f0b0074b.pdf
    • https://cdn-cms.f-static.net/uploads/4447096/normal_5fa1b6ae0e334.pdf
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f8a23ac04a25.pdf
    • https://jajivinejide.weebly.com/uploads/1/3/4/3/134354145/b195d9166e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3fda506e-a621-48e7-a2af-ba04f034d618/lalagopale.pdf
    • https://s3.amazonaws.com/fuwawibu/xifazigototunopodit.pdf
    • https://s3.amazonaws.com/luramamelolem/wanefofidevapapevigirona.pdf
    • https://uploads.strikinglycdn.com/files/b33b9fb5-c758-4408-9f19-3c84cc5ff0c8/wofovubigekuzewavuf.pdf
    • https://uploads.strikinglycdn.com/files/aa64610e-0ffb-4f25-b78d-a4064811f09e/28022766276.pdf
    • https://uploads.strikinglycdn.com/files/9e5c890d-ca7d-49cf-bc94-cc55731e7455/87712227228.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f605.bin
bee76b733cdf60efeaf7eb5db92ccc047a2dbcf414b4db5dbc1e1d02df73ac05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF605 5268 bytes
font_01_sfnt_off00010820.bin
09720d2754f3795ed82bd20789182e09769f4fc1d1f8b46504f104ddb8f75c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10820 11308 bytes
font_02_sfnt_off00012e61.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E61 4324 bytes

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