Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0ace6f12999cd2…

MALICIOUS

PDF

41.8 KB Created: 2020-08-21 04:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 027ff3024971d2788306f9191c6187b1 SHA-1: f5acd3a8e95f29774b2bafba9ad994b3159e3935 SHA-256: df0ace6f12999cd2e01c6a5c0ecb4a0b1dfdbbff9f215a8476735c4ba0ec9220
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a large number of external PDF links, likely for SEO manipulation. The document body text and embedded links suggest a social engineering lure, specifically a fake Google Chrome update, designed to trick users into clicking malicious URLs. The primary malicious URL identified is https://ttraff.ru/pify?keyword=google+chrome+update+version++free, which is likely used to deliver a secondary payload.

Heuristics 5

  • 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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=google+chrome+update+version++free
    • http://rigap.claudiaturner.org/uploads/1/3/1/4/131483281/5163035.pdf
    • http://files.studioandronico.com/uploads/1/3/1/4/131483372/niribe.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/pebugesiwotonujisoronaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/imperative_form_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87932640634.pdf
    • https://cdn.shopify.com/s/files/1/0430/6246/0577/files/zatirodiwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/74728912198.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/b_t_c_ki_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/8778/0248/files/pepejijijobewod.pdf
    • https://cdn.shopify.com/s/files/1/0430/7432/2586/files/dibosizaxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/kisusigubababufoxexor.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/71092750700.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_off000062cf.bin
aee3ab0f534005cae899c01870741b7a7d18242db03a26d0eaf657daaeea54ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5660 bytes
font_01_sfnt_off000075fa.bin
33830833a73ba5bd024d950ce052a788dacf12e6c5093bb2d164f5d589a29af9
pdf-font-stream PDF embedded font (sfnt) at offset 0x75FA 10800 bytes