Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbf50f93be5e8b65…

MALICIOUS

PDF

39.5 KB Created: 2020-08-24 01:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d471e1f6f137bc396debca4983f40393 SHA-1: 0146cf73bbae339a41f7d58a56448db65bc7b6b5 SHA-256: bbf50f93be5e8b650a5a695395aec654679bff96eeb5f351578a24fcab514eee
140 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'iphone ringtones for android mobile' and the malicious URL, suggesting a lure to drive traffic to the redirector. The 'SE_CALLBACK_LURE' heuristic further supports a phishing or scam pretext. No scripts were extracted, limiting the analysis of further stages.

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.ru/pify?keyword=iphone+ringtones+for+android+mobile
    • http://rezipen.carmenjabaloyes.com/uploads/1/3/1/4/131453433/3515751.pdf
    • http://xofaluk.ucfootball.co.nz/uploads/1/3/2/7/132710624/lobudenise.pdf
    • http://files.ezguitarz.com/uploads/1/3/1/6/131637186/jemadoludofef_vadulukukavuze_doziluzawezep_zopizedokajo.pdf
    • http://files.runeatrepeatnyc.com/uploads/1/3/0/7/130775245/zonuluzur-kepetawa-nigepuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3131/4077/files/kivuf.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/54370238291.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/4047592290.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/fumble_chart_5e.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/89645353701.pdf
    • https://cdn.shopify.com/s/files/1/0431/6787/5228/files/57941357673.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/74277496614.pdf
    • https://cdn.shopify.com/s/files/1/0433/5874/8822/files/benutijumib.pdf
    • https://cdn.shopify.com/s/files/1/0434/8457/7956/files/gunorosen.pdf
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/calendar_2020_kalnirnay.pdf
    • https://cdn.shopify.com/s/files/1/0433/7483/7923/files/rosofolirud.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_off00005bb3.bin
dfb59b0085d8b7d304c5b00656638877e706b36e3eff06fa598c955a5bd8e468
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB3 5532 bytes
font_01_sfnt_off00006e4b.bin
c355dbbe90ee6041ddc485aa2488e9e64d2d32b641db9f5b90c43e873aecbdae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4B 10248 bytes