Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ee8269b8a5d10d…

MALICIOUS

PDF

42.2 KB Created: 2020-07-17 04:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035da14997b43f0d94e7dbc43b083a05 SHA-1: 8a7a0d1fdf4a344972025364854b2620716f5cba SHA-256: d6ee8269b8a5d10d16da517fe1fdfd65eb7f10549b9a7205ce660e7e33a018ca
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One prominent link, 'https://ttraff.ru/wb?keyword=google%20pdf%20converter%20online%20free', redirects to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text, suggesting it is not intended for human readability but rather to host the malicious links.

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.ru/wb?keyword=google%20pdf%20converter%20online%20free
    • http://files.lushgardenhotels.com/uploads/1/3/0/8/130874493/nejefepega-mefupesigulaz-fumufazeve.pdf
    • http://files.robinlewismusic.com/uploads/1/3/1/8/131871994/b9f068.pdf
    • http://files.rathfrilandmotorclub.co.uk/uploads/1/3/2/3/132302913/zomawuzivoludi_petusol_mufawukemur_xitedelufukojob.pdf
    • http://files.queensofcountry.net/uploads/1/3/0/7/130776033/3223542.pdf
    • http://files.bayshoreallergy.com/uploads/1/3/1/1/131163723/9771015618af5.pdf
    • http://files.somethingforsam.com/uploads/1/3/2/8/132815004/fosabitajosom.pdf
    • http://files.zetaobz1920.com/uploads/1/3/0/8/130814387/4129274.pdf
    • http://files.theworldofmcewan.com/uploads/1/3/0/7/130738814/gibaja_tawix_wododibura_musimetal.pdf
    • https://kurasedi.files.wordpress.com/2020/07/22596169949.pdf
    • https://mirusafib.files.wordpress.com/2020/07/25562181011.pdf
    • https://rufumeridap.files.wordpress.com/2020/06/gububuputodekoze.pdf
    • https://jenivek336061134.files.wordpress.com/2020/07/vagixikunewunegejetevu.pdf
    • https://mepogebo.files.wordpress.com/2020/06/57932131688.pdf
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/13215455316.pdf
    • https://cdn.shopify.com/s/files/1/0429/8434/1657/files/vulujekufapev.pdf
    • https://cdn.shopify.com/s/files/1/0429/3538/6265/files/3651032434.pdf
    • https://cdn.shopify.com/s/files/1/0432/0490/3073/files/11890527363.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/51268499701.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/zomisegilafovefudokuto.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/66344975582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/46824127228.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_off00006524.bin
a8b9aeee408040070929f6077f13db19b1987e70fb90ed951b4960c5e4237c04
pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 4816 bytes
font_01_sfnt_off000075a0.bin
6c9628f78cdcd040f3bf440b50dc6fddf838585010758017c44324e4f08441e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A0 11172 bytes