Malicious PDF — malware analysis report

Static analysis result for SHA-256 efac317728540402…

MALICIOUS

PDF

52.1 KB Created: 2020-08-21 00:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c63d21a9dac4b4f1055423144f7ad51 SHA-1: 1cbf30c8531dd2d4c4aadf158863224603ecda79 SHA-256: efac317728540402276239d9ef0cc539a520435c7f40e786b5fb5aebc41366e0
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a malicious redirector, indicating a phishing or social engineering attempt. The primary malicious link, 'https://ttraff.ru/pify?keyword=business+proposal+template+for+investors', is designed to redirect users to further malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests an attempt to obscure the malicious destination and potentially leverage benign-looking domains for distribution.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=business+proposal+template+for+investors
    • http://files.clubnahakaratedo.com/uploads/1/3/2/8/132814680/0ecf22e.pdf
    • http://files.changlaoshiclassroom.com/uploads/1/3/0/9/130969056/najarejizexege_waseki_zokuf_voxatedugoruka.pdf
    • http://files.medfieldheightspto.com/uploads/1/3/1/0/131070190/joridesaz.pdf
    • http://files.charlesmuwonge.com/uploads/1/3/1/6/131606546/dipusugurikupes_vabaxatorinuro.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/30980665644.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/avira_full_crack_2019.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/tamakilenosasazinow.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/saduwozibabokaka.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/wududutexuru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/plural_of_cyclops.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/92223645782.pdf
    • https://cdn.shopify.com/s/files/1/0438/2015/5042/files/oxidation_of_fatty_acids.pdf
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/sepibazobanexusin.pdf
    • https://cdn.shopify.com/s/files/1/0428/4134/2108/files/nuroxesadokimosonakireko.pdf
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/55011826865.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5318/files/87054618063.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008420.bin
cb9e17a48176a4b7f674ce32e20a9e7cdfe8065f1e8b0956f05c2a4cc67966cf
pdf-font-stream PDF embedded font (sfnt) at offset 0x8420 5156 bytes
font_01_sfnt_off0000958d.bin
2b17894289ef4ac549ca5ccbfe538e6ebde94701791c0542cba9a71f2d67f349
pdf-font-stream PDF embedded font (sfnt) at offset 0x958D 2268 bytes
font_02_sfnt_off00009fa0.bin
a4b25e3ffbbecbd9bd9d4d81cf21aa00b7b9a62d790e6cc96716c885569d8c7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA0 10364 bytes