Malicious PDF — malware analysis report

Static analysis result for SHA-256 53539d4badf23a33…

MALICIOUS

PDF

36.3 KB Created: 2020-08-10 14:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a9c1e56346170be4e8f9eff9114ec8 SHA-1: b7d93145a4087f7d886dc054690c7d1f3c88c10c SHA-256: 53539d4badf23a330858bbdfeebd9ec040e8af420eb14ffafc74756519327451
140 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an ebook, which is a common lure for phishing or malware delivery. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the link points to known malicious infrastructure. Additionally, the 'SE_CALLBACK_LURE' heuristic suggests a potential callback phishing or tech-support scam context, although no phone number was explicitly extracted. The document body, though heavily obfuscated, contains the malicious URL.

Heuristics 4

  • 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.
  • 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.com/pify?keyword=analytic+geometry+ebook+pdf
    • http://files.ventergallery.com/uploads/1/3/0/7/130774990/bewexivojuzoko.pdf
    • http://files.kuroshgallery.com/uploads/1/3/0/7/130775032/1045509.pdf
    • http://files.elkhornvalleyhrc.com/uploads/1/3/0/7/130775466/f328c8.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/brazzers_account_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7308/files/mappa_bardonecchia.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdf
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/45722579886.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/ielts_speaking_makkar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/2003_saab_9-_3_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/critical_thinking_questions_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/2642/3701/files/english_horror_story_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/8667/5108/files/avadhuta_gita_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/pumejosolijisewodeteg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/gevaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4016/files/closed_form_summation.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotexujebo.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/
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dobemajafapurotex

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dbf.bin
800f15822e628af8baccb4d268ab8fd9cd08a09861ce305e7138fc87e7636155
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBF 5592 bytes
font_01_sfnt_off000060af.bin
58953db4647706b2c22dd544490f80d7f2b780ed99002181586a20c1f9d92f2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x60AF 10044 bytes