Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa092fa6d38bb169…

MALICIOUS

PDF

44.0 KB Created: 2020-08-20 11:47:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e4b600296f2e0abf3f7693ef8e71f8a SHA-1: 8010d57d2533181bd206f88259d499165f4678ed SHA-256: fa092fa6d38bb169babaa1c763bb58a8ab7dac001255cfd06ef3b03b94b07a40
140 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body also contains a lure for 'whatsapp apk 2018 free' and a callback phishing pretext related to billing or refunds. The presence of numerous links, including a link farm, suggests an attempt to drive traffic to malicious sites or distribute further malware. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=whatsapp++apk+2018+free
    • http://wavatob.ilketshallstandrew.com/uploads/1/3/0/7/130775961/jelidezeza-wiselufobaru-zujilidev-vipokew.pdf
    • http://files.jrstonemasonry.com/uploads/1/3/0/7/130775431/b21d75.pdf
    • https://cdn.shopify.com/s/files/1/0436/3105/0905/files/dazzle_dvc_100_driver_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/acronis_backup_cloud_manually_registered_agent.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81579197248.pdf
    • https://cdn.shopify.com/s/files/1/0432/4071/8496/files/nuxov.pdf
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/third_conditional_explanation.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/14571522042.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/gba_rom_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/fiviwavulikezojo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/wavibajogi.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_off00006cf0.bin
5c5dc7817c077a3bc5fff6a7716bd4876beb9f0e429015cb12f2f93a23c30d62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF0 5552 bytes
font_01_sfnt_off00007fe0.bin
22d656ad10698f3dbbd287d769f355c27b2f17ea242dc35ef3492bc25595a2c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE0 10420 bytes

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