Malicious PDF — malware analysis report

Static analysis result for SHA-256 445b66e910295960…

MALICIOUS

PDF

69.2 KB Created: 2020-12-07 06:36:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 7b5efb603400359a28c38d0a39ca968f SHA-1: b5a7fe5dc71fddec9adbb62372b98493d6562fef SHA-256: 445b66e9102959607e6979e12a6429305016b869b7fc9e212e7e86ee3d3b6538
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is disguised as a 'Roblox hallows eve 2018 guide'. This indicates a phishing or malware distribution attempt. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. No scripts were extracted, but the presence of a malicious URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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=roblox+hallows+eve+2018+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417813/normal_5faec7171e6da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f9e01ad8ca28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc8390e9-0192-4952-bf62-580799d82c52/flash_player_instalacja_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/672875c1-30ea-4cec-834a-569d4df9dfc0/relacion_entre_sociedad_y_cultura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bf2e978-eb16-4625-93a5-a3cbbee275ef/99109649538.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc168c927a199023ab8f22b/t/5fc8322bdcb5b2607972b9e1/1606955563590/xasupilive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c246d67-919f-490d-a296-18994a69246d/amadeus_peter_shaffer_guin.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc38b1e9698b02c7f3141e7/t/5fc6ee46c953717e09caa68b/1606872649756/zolamoripod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6def09b-8e5c-49c9-9c45-5842ebbe194e/tiwakigatiwakewalajefiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7b8c1f2-dacb-43ed-b906-bbe1774febc4/68246424655.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/vofuninaseparukade.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_off0000d180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD180 5880 bytes
SHA-256: c47a3494a68fd352bf16ef02e6765d001fc49cbf8dee18863410d3d9cb7d8be7
font_01_sfnt_off0000e59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE59D 10144 bytes
SHA-256: 934a028e2c670ce2edf3c808daf344189c6fb956c31bb3b89492d56af6209eda

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