Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e96eb70400c632…

MALICIOUS

PDF

33.6 KB Created: 2020-08-20 02:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a26f9651172aed0bba3f5bd9f40a7247 SHA-1: 8a27efd9e97abb30fc120c21e6beae6493125ba0 SHA-256: 07e96eb70400c63206f89d0d9c8c5fda1265d13598730fb757235ccd220c5991
154 Risk Score

Malware Insights

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

The PDF document contains a link farm pointing to numerous PDF files, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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.ru/pify?keyword=bus+parking+game
    • http://wojufew.dave4spotsy.com/uploads/1/3/1/6/131606490/zajirovasudela.pdf
    • http://files.santarosavacation.com/uploads/1/3/0/8/130874575/zumonomufuvenax.pdf
    • http://files.seedsofhopecounseling.com/uploads/1/3/2/3/132303378/ffec2dfe6.pdf
    • http://files.ceradwen.com/uploads/1/3/1/3/131398093/7255563.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/81768946054.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/rotafapum.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/viveruje.pdf
    • https://cdn.shopify.com/s/files/1/0429/0881/1427/files/36840307614.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/22424894945.pdf
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/remove_duplicates_from_list_python.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/denosujaguzenuzasazejew.pdf
    • https://cdn.shopify.com/s/files/1/0435/2462/0447/files/40316363706.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/botidal.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004693.bin
b13e233134c451990df53fdaac95d8af26166987f9a65f267e509df75f81ca92
pdf-font-stream PDF embedded font (sfnt) at offset 0x4693 5220 bytes
font_01_sfnt_off00005843.bin
1fcb1160d490dc81cbcf41e529de89cf86d322c2216e8fe6a612fe78c11760a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5843 9972 bytes