Malicious PDF — malware analysis report

Static analysis result for SHA-256 eed089ced3015e8a…

MALICIOUS

PDF

73.2 KB Created: 2020-12-30 22:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 760e1936e8c090b1e664f1842eac56c2 SHA-1: d49a3889f1f6c14c8c2011e474e30fe87eb8245a SHA-256: eed089ced3015e8a2a5d30b6854d7b5a85adf92462e27efeeb24fa7abc954f5d
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 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. The embedded URL is likely used to redirect the user to a phishing page or to download a secondary payload. No scripts were extracted, but the presence of a malicious redirector and the ML score indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/strik?utm_term=computer+launcher+launcher+for+windows+10+apk+download
    • https://cdn.sqhk.co/latusetime/bGhahd5/condado_puerto_rico_furnished_apartments.pdf
    • https://cdn.sqhk.co/wolitobutak/gcAFahh/road_america_superbike_2020_schedule.pdf
    • https://xowunaxevome.weebly.com/uploads/1/3/4/6/134679103/zigewunitoz.pdf
    • https://fekalebewobazo.weebly.com/uploads/1/3/4/6/134668576/9a280443189.pdf
    • https://guwagigiruf.weebly.com/uploads/1/3/5/3/135303004/senatirudum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kisimujuk/89469970958.pdf
    • https://uploads.strikinglycdn.com/files/49d5f1e0-0ea2-4c87-aee2-58b9970a1f68/economics_mcconnell_20th_edition.pdf
    • https://s3.amazonaws.com/dumupa/97166805687.pdf
    • https://uploads.strikinglycdn.com/files/0a489ba9-876c-427d-aa7f-5190b787afd7/smartthings_motion_sensor_m_n_im6001_battery.pdf
    • https://uploads.strikinglycdn.com/files/7431a77b-c42c-4189-aebc-d96552d3aae8/bebafonufipevo.pdf
    • https://s3.amazonaws.com/veraxawewib/vesiwevalororovidoka.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d0.bin
51fae62a8881c51abf465e24288bea27f6058a529d22eab63f11c5d00aa2c497
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D0 5648 bytes
font_01_sfnt_off0000f4ee.bin
55ddc8ae4640cf20afcd20a74507bbd0fccbaadaade02fd25e5945f675d5cdfb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 10296 bytes