Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2601861a8311097…

MALICIOUS

PDF

77.5 KB Created: 2020-10-31 01:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28
MD5: 44057225b4e8c52787ba592b3ffce5b8 SHA-1: 87ab8d8e95d6f7b41644ee94fa90f9d680a94dd7 SHA-256: d2601861a831109758af1fb65b8c88939729bfcf825d90a36ddfa65d961f0d09
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing for a redirector link to 'ggtraff.ru'. This suggests the document is designed to redirect users to malicious infrastructure, likely for phishing or to download further malware. The presence of a large number of external PDF links further indicates a link farm or SEO poisoning attempt to drive traffic to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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/pify?keyword=vc+andrews+petals+on+the+wind+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383704/normal_5f9ca18c3e829.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/lasimewisub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f8b5bcfa3758.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f8c664d9ac33.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/jepetotu.pdfIn PDF document text
    • https://difiraboveju.weebly.com/uploads/1/3/4/5/134508976/pimujula.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/vuses.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421200/normal_5f98c51b16dfc.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/ea34c71c-c172-44ea-b714-f8944585149b/terufidezotive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0762/2550/files/chasing_coral_video_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/3435/8941/files/tudewuxin.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BE 5300 bytes
SHA-256: 2e91b93953f2e182f63d452234f3d2d67bcfccb1dd780118d8016b33295c11f8
font_01_sfnt_off0000e8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D6 10820 bytes
SHA-256: 76bcf3b6837f087ed9472d31af00517ef5f2e94508fbd2bf31d3c40827fdf2f8
font_02_sfnt_off00010e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E01 17768 bytes
SHA-256: bb6cd4d93ae13487d8a996558bb00534c9a981597967d2dc59015cc1dfbe9ec1

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