Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebda2f02b19bf0a…

MALICIOUS

PDF

36.4 KB Created: 2020-08-06 05:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 499b0f50ee91c73f8951da3e8b3716cf SHA-1: 6ec33b115a74be841e9c78ac2a39a97f3c90a3a2 SHA-256: 8ebda2f02b19bf0ad754de54fca9802ca762657befd39a2935afce876538eccb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=certificate+background+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, contains embedded URLs and suggests a social engineering lure to install a browser extension or viewer. This combination indicates a likely phishing or malware delivery attempt.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=certificate+background+pdf
    • http://ratolos.simplybprints.com/uploads/1/3/1/3/131379312/selenop-piriv.pdf
    • http://files.morganlawpllc.com/uploads/1/3/0/7/130739802/suwojukiludinon.pdf
    • http://files.leescrossroadmbc.com/uploads/1/3/1/3/131383760/padikitegova.pdf
    • http://files.alzheimersocclub.com/uploads/1/3/1/3/131379253/nedafekokedut.pdf
    • http://files.breastlearningonline.com/uploads/1/3/1/0/131070560/3c345064edea.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/rolowupaver.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1813/files/33683138456.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/block_adobe_activation.pdf
    • https://cdn.shopify.com/s/files/1/0435/0305/9110/files/kigefiko.pdf
    • https://cdn.shopify.com/s/files/1/0429/8024/5657/files/xamunosanelog.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/before_you_were_born_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/rapobujumikebi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2657/0664/files/pretty_ugly_poem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/famagijasunidekoruxufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/pafoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/rukuvirogomedesoko.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_off00005189.bin
0ee0d84cf0dd1dc15f09868f6165f88b331eb8c30de790ebb1b7b735f21e6a49
pdf-font-stream PDF embedded font (sfnt) at offset 0x5189 5224 bytes
font_01_sfnt_off00006357.bin
47c11632e914fdbcd688b11e77cd7fea8f955fcf69a89c153ac49975ee5e3efb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6357 9876 bytes