Malicious PDF — malware analysis report

Static analysis result for SHA-256 5483ec4960ca3101…

MALICIOUS

PDF

45.5 KB Created: 2020-08-12 12:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0ce157443c8bb52efe256b6fdba59f2 SHA-1: 1a7f9ba02d984e1caca8c04c957760f822bb7679 SHA-256: 5483ec4960ca31011e70d753934145e8e7eff8ed863bb613fbfc9c0ba7746de4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link that points to ttraff.com, which is associated with malicious activity. Additionally, it hosts a large number of external PDF links, many of which are hosted on Shopify, suggesting a link farm for SEO manipulation. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.com/wb?keyword=fablehaven%20tome%203%20pdf%20gratuit
    • http://vagakel.maggielynnelawrence.com/uploads/1/3/1/3/131398140/desamor.pdf
    • http://files.onesquareworld.org/uploads/1/3/0/7/130740011/zilopafenuvosekin.pdf
    • http://files.jazzandbluesproject.org/uploads/1/3/1/4/131406430/febosesulalew-vuwalerirulaj-pudapawisisu.pdf
    • http://files.emanuellutherandaycare.com/uploads/1/3/0/7/130775413/4266282.pdf
    • http://files.meowstories.us/uploads/1/3/0/8/130813601/6e21f8d9.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/toxefe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9978/2309/files/53064336921.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/newuwogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/sugopiravesagabatapisi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0337/7824/files/basic_accounting_journal_entries_practice.pdf
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/fuladobefuzudozezekawob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/suramagufumaxuragozud.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/asciidoc_footer.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/sql_server_2020_tutorial_point.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/free_printable_bulletin_board_letters.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/tefuxizeki.pdf
    • https://cdn.shopify.com/s/files/1/0446/9784/5913/files/el_bestiario_arreola.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/21475101755.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/50246043443.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/
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/502

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f9c.bin
f059ab0f98066eb1e79ec225a18dcde1810d057ff1798b50bda9c1481af1cde5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9C 5596 bytes
font_01_sfnt_off00008285.bin
f0cbf552687ca1bff85567b2adb992d989c15cdf37cddeecedc40e8450b3289a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8285 11792 bytes