Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffa27331e3e52d8…

MALICIOUS

PDF

45.0 KB Created: 2020-08-21 05:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77efcd3aca4529888e69a3d3ed7d9ef4 SHA-1: f8e0952b66214c36663d420f9194733d4d4885d5 SHA-256: 3ffa27331e3e52d85adfec9ae187c8d297be9d3e25f98bb7120681ac466bf40b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify-hosted PDFs, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=sheet+basant+ki+kahani+picture'. This suggests the document is designed to lead users to malicious infrastructure through a deceptive link farm. No scripts were extracted from this sample.

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=sheet+basant+ki+kahani+picture
    • http://files.susantaylorart.co.uk/uploads/1/3/0/7/130775108/07dd2ab2a3e3ae.pdf
    • http://lejesaso.aidourclimate.com/uploads/1/3/0/7/130776428/kanofololevoxozaxuv.pdf
    • http://files.solvingminds.com/uploads/1/3/1/3/131397973/tetafutiv_totovule_towirufefurasul.pdf
    • http://jazarog.obamareflections.com/uploads/1/3/1/3/131384536/1420510.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2773/files/ferumotatosoneretif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/84786530085.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/kasepozufololatisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobuwavidojanunixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/encyclopedia_of_world_history_volume_6.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/27981901865.pdf
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/soxapolumimituwa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/ceres_m_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/3759/5560/files/84611418603.pdf
    • https://cdn.shopify.com/s/files/1/0433/4862/3510/files/zopixipinatugupa.pdf
    • https://cdn.shopify.com/s/files/1/0434/1547/0245/files/nelewikazepejesanarul.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/minecraft_cops_and_robbers.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_off0000593c.bin
dc3f5fea795500ce43c477c178ae2bf4be3c1b825158f4870bfdae672e5a066d
pdf-font-stream PDF embedded font (sfnt) at offset 0x593C 5068 bytes
font_01_sfnt_off00006a5f.bin
c5b0752034f4efa4cdf66b58fb6b34815ba346da339ce801aedab47b78f6004a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5F 14128 bytes
font_02_sfnt_off00009715.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9715 4324 bytes