Malicious PDF — malware analysis report

Static analysis result for SHA-256 aead101f68fd75fe…

MALICIOUS

PDF

39.4 KB Created: 2020-08-02 11:15:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3f7ee6656a522a744c4e3a07b6e27b0 SHA-1: 091f26620be3d042749a8b3dfda496be413ada6b SHA-256: aead101f68fd75fed9a7d5b9c9f150e9d3372e35062df7b169c613fd4311f1ef
180 Risk Score

Malware Insights

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

The PDF contains a phone number '1800- 266- 2278' and is associated with heuristics indicating a callback lure and payment redirection. It also contains a link to a known malicious redirector, 'https://ttraff.ru/pify?keyword=1800-+266-+2278', and a large number of embedded links to PDFs hosted on Shopify, suggesting a link farm. The document body is heavily obfuscated but contains the phone number and URLs. The combination of these factors strongly suggests a social engineering attack aimed at defrauding the user.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=1800-+266-+2278
    • http://files.collegedreamsconsulting.com/uploads/1/3/0/7/130776791/1494641.pdf
    • http://files.cowgirlfaithbordercollies.com/uploads/1/3/0/7/130775310/xukeguzujada.pdf
    • http://files.art35n.org/uploads/1/3/1/3/131398605/witakinejabuw.pdf
    • http://files.prestonsburgchurch.org/uploads/1/3/1/3/131397940/6c72b807ff1c.pdf
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/talotelip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dokole.pdf
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/30c_to_fahrenheit.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/19928340354.pdf
    • https://cdn.shopify.com/s/files/1/0429/7955/7535/files/64576009060.pdf
    • https://cdn.shopify.com/s/files/1/0430/0757/4179/files/13003661456.pdf
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/nenirulamalizerulowanugef.pdf
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/pulad.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/pumufaril.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/96311043427.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/68817401216.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/84139179998.pdf
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/mereme.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_off00005e00.bin
01b9070994c50f2f23fbda18c8b096c8a4adb6ea81a6120a6a8a81440c93cdb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E00 4856 bytes
font_01_sfnt_off00006eae.bin
41d824c8a835b69bbd8eff71b4da2938f3535ab83f6bd95d5f3358f494df45a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 10060 bytes

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