Malicious PDF — malware analysis report

Static analysis result for SHA-256 e370320f0f8b9ff1…

MALICIOUS

PDF

45.8 KB Created: 2020-07-29 06:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dbcca66a42024de23665128a77ce3f9 SHA-1: a2e4a3efff1254b50b0551ad518ec5ad9f125cc3 SHA-256: e370320f0f8b9ff12e9329bf1a270b332bcffaf8bc08ebe85ad8138df8439e56
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This indicates an attempt to direct users to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs. The presence of numerous external links, including the malicious redirector, suggests a link farm or redirection strategy to obscure the final malicious destination.

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.ru/pify?keyword=after+effects+and+cinema+4d+lite+pdf
    • http://files.dramaticvoicesprogramberlin.com/uploads/1/3/0/7/130739519/6c2609c0bfc.pdf
    • http://files.trumpsgreatamericafacts.com/uploads/1/3/1/3/131384333/41351b6e.pdf
    • http://files.corefreeride.com/uploads/1/3/1/3/131383619/ninikaxijaxiwi-tugujotafujowu-vosamezit.pdf
    • http://files.porta.us/uploads/1/3/1/8/131871725/7646458.pdf
    • http://files.erniepeggycreations.com/uploads/1/3/0/7/130775373/4727c7f379.pdf
    • http://files.porta.us/uploads/1/3
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/55750111267.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/wubezuruludexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/jagorox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65431134640.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/52002486503.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/10091114601.pdf
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/36954842988.pdf
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/sunememexopote.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/samudijiziretolonorefuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/tuwowatozoz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f01.bin
7e0418e33aa5100e979311af6489ca0b61b6e9a51e1e32459862e24c2d40019b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 5056 bytes
font_01_sfnt_off00007013.bin
c9d4cfc3fee8078a6727c1bb1e9d5e842bc6993053abc568a5a3f18ba684630b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 10704 bytes
font_02_sfnt_off000094d1.bin
df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210
pdf-font-stream PDF embedded font (sfnt) at offset 0x94D1 16060 bytes