Malicious PDF — malware analysis report

Static analysis result for SHA-256 e704c15bb4d5371e…

MALICIOUS

PDF

56.9 KB Created: 2020-10-26 09:46:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 092832968ae1a55a2c365de144bcd92f SHA-1: 903239c5a9fc2c4f2f52fd2c76125785e2a4febc SHA-256: e704c15bb4d5371e49adf7b2d979c03aa7a6316a35e8015db6e84cdeea7887bf
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'. Additionally, another critical heuristic indicates a PDF link farm with numerous external links, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the embedded URL is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

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/aws?keyword=characteristics+of+terrestrial+and+aquatic+ecosystem+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5f94007432292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f8717613a177.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414360/normal_5f9534458c5d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368964/normal_5f89b1e53ac23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383679/normal_5f8ccdc23bf39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5f94d75056330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f900ae77ef50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392472/normal_5f91dab7921cc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/toguvaju/graphic_organizers_for_middle_school_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/38006395440.pdfIn PDF document text
    • https://s3.amazonaws.com/rokuwapesu/thermal_conductivity_of_gases.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/american_english_file_3_second_edition_teacher_s_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/jolibu.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/flower_shop_business_plan_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4083/2150/files/japan_tv_program_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7862/4426/files/togexaramazubotirapogaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1651/8805/files/63527132252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7292/5077/files/40648171055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0153/0526/files/87295193842.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_off00008841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8841 5528 bytes
SHA-256: 05c9b474cf97791f06bb11a725061c9e486da95a169d9b4134a515275f13f4f8
font_01_sfnt_off00009ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE1 10444 bytes
SHA-256: ec2b169d9df2f0d96c86a5e71e4e84617dc7c472dc768b8cd445ce4c2d61d88b
font_02_sfnt_off0000becd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBECD 16448 bytes
SHA-256: 4d0b7fceb6e0b8544dba10d314310d86ee7e0ac375a8e3b5fd915ca5fa71995c

Open this report in the interactive analyzer, or submit your own file for analysis.