Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d0ea849ed589b5…

MALICIOUS

PDF

34.9 KB Created: 2020-08-19 16:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cab1ba2cf01cb2021ee765f8301ca80c SHA-1: 3ff608c3990ac4c3af3604cc4861af4d0af0050c SHA-256: f2d0ea849ed589b59599f084db7d272ae23b1063605ab71b7c92c663dd5e9571
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=annual+report+aisa+2017, is identified as a known malicious redirector. This suggests the document is part of a link farm designed to distribute malicious content or lead users to phishing sites.

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://ttraff.cc/pify?keyword=annual+report+aisa+2017
    • http://gibos.theirisproject.net/uploads/1/3/1/4/131452922/9349311.pdf
    • https://cdn.shopify.com/s/files/1/0451/4365/4565/files/44977061075.pdf
    • https://cdn.shopify.com/s/files/1/0431/2232/7706/files/hastie_statistical_learning.pdf
    • https://cdn.shopify.com/s/files/1/0432/9016/5403/files/82500777509.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/jamede.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/1814203604.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4016/files/appraisal_form_1004p.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/18847991577.pdf
    • https://cdn.shopify.com/s/files/1/0448/1158/3645/files/bonafide_certificate_school.pdf
    • https://cdn.shopify.com/s/files/1/0437/4567/3377/files/database_system_concepts_6th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/zaxezituluvunoritokaduke.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b4c.bin
1f2ac9ac54aa1c3dad9419c06ae7912969af53fb3cc90766f8fff053778e8dff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B4C 5208 bytes
font_01_sfnt_off00005d10.bin
a0e725ef232f1c26ecdb1b4274dbc8263da7736a6a3ad25d363c1ad3c7c1eb33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D10 10028 bytes

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