Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3979067e1364df2…

MALICIOUS

PDF

45.1 KB Created: 2020-08-25 11:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b7f1354b939dc0562f7127edede084 SHA-1: 017b1f956a3be6c78903ed8204345baa5f79d75c SHA-256: b3979067e1364df28b0fdf4d5c733f5f8a01cc9794bc7a1206f65ab0adc8a059
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to PDF files hosted on various domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=android+17+power+level', is flagged as a malicious redirector. This suggests the document's purpose is to direct users to malicious content, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of direct execution behavior.

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.cc/pify?keyword=android+17+power+level
    • http://vejamep.lbcevansville.com/uploads/1/3/1/4/131452976/1396b57d4a5c5b.pdf
    • http://files.wakefieldmusicboosters.com/uploads/1/3/1/3/131380558/ladew.pdf
    • http://zidigu.quinkydinkdonuts.com/uploads/1/3/1/4/131437657/ligasajosokininef.pdf
    • http://files.cranberrycloud.com/uploads/1/3/1/4/131452778/gakab.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/kilukugusuwafewolodupepab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0350/9914/files/sabifuvukafetaxoginobaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/72251281984.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9753/files/59305988400.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2978/files/kirchhoff_s_law_of_thermal_radiation.pdf
    • https://cdn.shopify.com/s/files/1/0447/5263/4005/files/zerulosubolinozu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/estrategia_competitiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/6538/4866/files/51221314924.pdf
    • https://cdn.shopify.com/s/files/1/0433/9525/2374/files/zabebotoganevozarexobop.pdf
    • https://cdn.shopify.com/s/files/1/0432/4294/6724/files/xozudidurozebez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7913659608.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_off00006a1b.bin
14fab3ebbd91b53d682ff3482ae9d9b3ba8ec32ee538e92f3474859685b2a97a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1B 4840 bytes
font_01_sfnt_off00007abf.bin
9669611aa470edc749878598b91d516c0e0ec53727dca5a1c55c2cda5e0de932		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABF 14272 bytes

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