Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47906bfbc2cf076…

MALICIOUS

PDF

47.5 KB Created: 2020-09-29 19:44:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0df755bc517fbb1317b861e2ba5bc27d SHA-1: ab474aaed9c13f6ce8dbff91187f7f38f5c118ae SHA-256: e47906bfbc2cf07610356701aed02d57d200d858116d79054cad776305579f92
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is highly indicative of a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the attack vector. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ggtraff.ru/strik?keyword=andy+puddicombe+books+pdf
    • http://files.friendofgeoff.com/uploads/1/3/0/8/130874282/bivabif.pdf
    • http://files.practicethehobbyofkings.net/uploads/1/3/1/3/131381679/ziwapogodamem.pdf
    • http://direbaka.ysk-chb.com/uploads/1/3/1/4/131406676/tamazemowesojimidal.pdf
    • https://site-1037054.mozfiles.com/files/1037054/dupowuwa.pdf
    • https://site-1036735.mozfiles.com/files/1036735/25839722017.pdf
    • https://site-1036651.mozfiles.com/files/1036651/zugegofakajakozilutufup.pdf
    • https://site-1037086.mozfiles.com/files/1037086/bagaturagedibe.pdf
    • https://site-1037850.mozfiles.com/files/1037850/841224693.pdf
    • https://site-1037129.mozfiles.com/files/1037129/59582173155.pdf
    • https://site-1037111.mozfiles.com/files/1037111/goxugadajizolosusigige.pdf
    • https://site-1037180.mozfiles.com/files/1037180/8044545017.pdf
    • http://files.katetodd.com/uploads/1/3/0/7/130739470/3753722.pdf
    • http://files.theultimategaminggalaxy.com/uploads/1/3/1/4/131406289/melevirorogo.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007eb1.bin
e68fd7139a2a5386ac77789033785401f882ec285824406458092cdbe188f30d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB1 5256 bytes
font_01_sfnt_off00009091.bin
b3cd10f2836dd8766f55f19478ca68357835f95eea8c76462e368b82a688f394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9091 9652 bytes

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