Malicious PDF — malware analysis report

Static analysis result for SHA-256 022060e4ab398fcf…

MALICIOUS

PDF

63.4 KB Created: 2021-01-14 11:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: ed1a65b0476af82f4ae64197d5c73f22 SHA-1: 7e34062d800f0807563b11312b987b73e7a7bfb4 SHA-256: 022060e4ab398fcf24e9825d5adf21f2c3085deef3ebeb60a1fc3c600eb6ac38
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded links, including one pointing to a known malicious redirector at 'ggtraff.ru', suggesting it is designed to lead users to harmful sites. The presence of multiple links on disposable hosting further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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?utm_term=chak+de+india+full+movie++hotstar In PDF document text
    • https://site-1178359.mozfiles.com/files/1178359/ultimate_fishing_simulator_2_xbox_one.pdfIn PDF document text
    • https://site-1174826.mozfiles.com/files/1174826/19197074121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5f8f9617daff9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383567/normal_5f900694b872f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8788b97f6bb.pdfIn PDF document text
    • https://cdn.sqhk.co/zefadanexa/ShfOxja/18012755845.pdfIn PDF document text
    • https://site-1178332.mozfiles.com/files/1178332/gudobutedi.pdfIn PDF document text
    • https://wadazujirala.weebly.com/uploads/1/3/4/5/134596454/pefirez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407057/normal_5ffa4168e941f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426695/normal_5ff1dcd461ee5.pdfIn PDF document text
    • https://fuwelobuzade.weebly.com/uploads/1/3/4/6/134649994/b7b4b0546dec.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/iidmjco/euro_train_simulator_2_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475376/normal_5fe4d519acd07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000bb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB40 5176 bytes
SHA-256: 270542b53037bb9abba8799556bf4d269e8bf9efa01f327959ddb14b2cb72ec4
font_01_sfnt_off0000ccb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB6 10156 bytes
SHA-256: 6852400c293e9341ce09c07a72b41764a72718f3840185dad1cdacd3c1d9d081

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