Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb8ec9b4a7ebf178…

MALICIOUS

PDF

46.2 KB Created: 2020-08-26 15:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0258e3d7a4b77832f122774b54b633ca SHA-1: f5c97af2e1dd8ad6b0ad0313bba47ab50793486e SHA-256: fb8ec9b4a7ebf1789cebe2f95c98186753910a80bfe8d78aa1fe3bcdd4951a44
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.me'. This URL is also present in the document body and is likely used to redirect users to a malicious site. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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.me/pify?keyword=cadette+night+owl+badge+requirements
    • http://files.flintcrossfit.com/uploads/1/3/2/6/132695818/3dc5a3.pdf
    • http://files.craig-thomson.co.uk/uploads/1/3/2/6/132681194/xuxoxino_wikaxe_dizovizesi.pdf
    • http://fadut.eastendjourneys.com/uploads/1/3/1/4/131438096/davawopasijego.pdf
    • http://files.wellwithart.com/uploads/1/3/2/8/132815753/lefinoribiwewi_tositavabowini.pdf
    • https://cdn.shopify.com/s/files/1/0434/5538/1669/files/18116039897.pdf
    • https://cdn.shopify.com/s/files/1/0439/0954/6136/files/certificate_of_origin_template_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/crosswords_with_friends_answers_10_4_18.pdf
    • https://cdn.shopify.com/s/files/1/0439/9667/6254/files/46216195809.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/falanetomugama.pdf
    • https://cdn.shopify.com/s/files/1/0436/5382/4677/files/cap_form_for_college_admission_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2943/files/bug_bounty_hunter_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0438/0416/4257/files/zonumeturifibirujatagow.pdf
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/37942841088.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/80910158952.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_off0000691d.bin
bbe653bca053a5d1fca5e0a58ee526a63c164fa33ce4c9adc471fb35c56864d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 5504 bytes
font_01_sfnt_off00007ba9.bin
03d6d7e4991ac33e443c2c7fc7ad768a5b7bf5e053be30a4f6ed81f368112889
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA9 10028 bytes
font_02_sfnt_off00009df3.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF3 4324 bytes