Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac002ade3aab5746…

MALICIOUS

PDF

41.5 KB Created: 2020-08-09 02:21:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6af68c80dabc6848443631d70fc7c469 SHA-1: b77f2aeb15a5d78cda0b3cd29d92db5ba363ca4e SHA-256: ac002ade3aab574640c8ef61d5c8673f5d46b08ce021469ad9512bfb684a43e0
128 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The presence of a visual download button further supports a lure-based attack. The document body, though heavily obfuscated, contains the malicious redirector URL, indicating an attempt to direct the user to malicious infrastructure.

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.cc/pify?keyword=pdf+page+splitter+mac
    • http://files.becuteimporium.com/uploads/1/3/0/7/130739202/bunulatovevipis-futoferabaron-fanudot-kodid.pdf
    • http://files.28bullets.com/uploads/1/3/2/8/132816042/wolamonakow-puzawoxeme-zovoguki.pdf
    • http://files.watermarqdesign.com/uploads/1/3/1/3/131398157/429090.pdf
    • http://files.ubcstephenministry.com/uploads/1/3/2/8/132814071/1827fa65c4fe07e.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/what_does._com_mean.pdf
    • https://cdn.shopify.com/s/files/1/0427/5562/1031/files/wimawugiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/38807467522.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/bupigikadesire.pdf
    • https://cdn.shopify.com/s/files/1/0431/6482/7805/files/software_quality_assurance_free_download_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/disable_nvidia_ansel.pdf
    • https://cdn.shopify.com/s/files/1/0431/6636/7895/files/list_of_nationality.pdf
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/rulozi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7939/1646/files/gimnasia_cerebral_libro.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/16338595687.pdf
    • https://cdn.shopify.com/s/files/1/0436/9576/7706/files/convert_cdr_file_into_online.pdf
    • https://cdn.shopify.com/s/files/1/0428/5674/3079/files/95433614588.pdf
    • https://cdn.shopify.com/s/files/1/0454/4541/5070/files/pdf_annotator_6_crack.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/jimidibolowudumaf.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_off00006446.bin
f631ac91a9d2552ad239e601797fdabfa3f7b1d3454537a8c517ea575be91dfb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6446 5476 bytes
font_01_sfnt_off000076d8.bin
ace9ddb54e7e036703615e0faa678e71ef33a7eddaaab93088a4268dddf51d36
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D8 10020 bytes