Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1faee504f786cf…

MALICIOUS

PDF

48.5 KB Created: 2020-08-21 16:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a002b4734463c00e5db20117dac4109 SHA-1: ad270695256a533edb212cd901aeca7fb12ca78d SHA-256: 9e1faee504f786cf99e5bb15ab870d7f40fb0516fa6c6fc9c77ba01dda650126
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 'https://ttraff.com/pify?keyword=gwent+mobile+guide'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous other links to external PDFs, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to increase visibility and traffic to the malicious redirector.

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/pify?keyword=gwent+mobile+guide
    • http://files.myfootrehab.ca/uploads/1/3/0/7/130776327/razawuza.pdf
    • http://badejat.gilipalms.com/uploads/1/3/0/7/130776255/8a17aa4945.pdf
    • https://cdn.shopify.com/s/files/1/0437/4118/4165/files/academia._edu_er_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3691/files/21307949948.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/muwesedezo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4928/6817/files/resmed_cpap_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/89165085873.pdf
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/beluzejabazobamatatilaruz.pdf
    • https://cdn.shopify.com/s/files/1/0430/0305/2191/files/arby_s_gyros_nutrition_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/jozepokagoxabemojipenawa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7746/files/open_office_resume_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/5724/9430/files/pharmacy_technician_exam_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/12739434960.pdf
    • https://cdn.shopify.com/s/files/1/0434/6567/0806/files/lopugapevatiwesajapego.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_off0000729c.bin
3c59123f6e238f450c08599e5c2d4fb76eb9039764abe68006bb473dbc9cf8ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x729C 4804 bytes
font_01_sfnt_off000082f4.bin
af218cb3590906f61c593d9349ced3975ace2ab7a864af774ab9c12f792b4a12
pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 10528 bytes
font_02_sfnt_off0000a6e4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E4 4324 bytes