Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba834a3c8767675a…

MALICIOUS

PDF

44.7 KB Created: 2020-08-22 08:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffb62228f3b0692246aaf649d99d75ac SHA-1: b02e7454539427e449e83c6ac9069316f362a49f SHA-256: ba834a3c8767675a903ca6ef595b116fa94cfe17c92ecddb22a741bc14d786cf
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=bombsquad+apk+latest+version+mod'. This URL is presented within the document body, suggesting a social engineering lure to download an application. The PDF also contains a link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0433/3391/0681/files/78156112840.pdf'. The presence of these links and the lure text strongly suggest a malicious intent to redirect users to potentially harmful content.

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.ru/pify?keyword=bombsquad+apk+latest+version+mod
    • http://tafutafo.nsacchitella.studio/uploads/1/3/1/4/131410007/wazutopez.pdf
    • http://giwive.easyacrescustomcycle.ca/uploads/1/3/0/7/130776486/gupepaterituw.pdf
    • http://files.heantonpunchardon.com/uploads/1/3/1/8/131856430/4085e93089114f4.pdf
    • http://fafiwuzib.minghuikuo.com/uploads/1/3/1/4/131407005/magowiwumibi.pdf
    • http://files.artographicexplorations.com/uploads/1/3/0/7/130775727/1f88b3670ab2.pdf
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/78156112840.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/bmw_s1000rr_2020_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/readers_digest_crossword_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/3942/3655/files/circular_saw_rip_fence_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/0742/6216/files/atlanta_united_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0451/7163/8421/files/camping_strasko_plan.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/65574684808.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/66943376883.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/negekudowamup.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_off0000709f.bin
19387ef3fdd9751f4ad01d16f5baf699f2c0c80e6e35ff3c9f9777d2f1958290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709F 5544 bytes
font_01_sfnt_off0000835d.bin
78de8b59f917c5feac0d8cd83df2374652fa09614468c102bcf5a977f9ab68e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x835D 10092 bytes

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