Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fd1fb6364580a11…

MALICIOUS

PDF

45.3 KB Created: 2020-08-14 09:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59cb55066d9a27db9e23c64d1f1b86f0 SHA-1: 0567a451e98b1f51ca20ba808c4c7b1c8125feaf SHA-256: 7fd1fb6364580a11059cd76a2ecf6f42d585cbeb9109f8c82730be2c8ca23965
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and keyword as the redirector, suggesting a lure. The presence of many external PDF links, including to shopify.com, indicates a link farm strategy, likely to obscure the malicious redirector. The primary malicious IOC is the redirector URL, which is designed to lead users to a harmful destination.

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.com/pify?keyword=class+dojo++for+windows+7
    • http://files.visionstheperformingarts.com/uploads/1/3/0/7/130775017/241874.pdf
    • http://demisutek.cbcneligh.net/uploads/1/3/1/4/131455158/6c8ef4d55f18.pdf
    • http://files.rutherfordmemorialumc.com/uploads/1/3/1/4/131408928/gesekegagimem.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/babuzijeroruzisakinu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/vagujowupemalazufoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2763/files/vezoworiwividud.pdf
    • https://cdn.shopify.com/s/files/1/0440/3914/3574/files/49458963964.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/42281896413.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0485/files/56247667775.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/lajukenolodaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/9882402348.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/fakikogalovime.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/55657149573.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91025233068.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7191/files/comptia_cybersecurity_analyst_cysa_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0436/1243/8685/files/area_of_circles_worksheet_kuta.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_off00005e13.bin
ae273eec65a6ab83e73ad419dbc3646219c33066826d74e7be3fb534b132a732
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E13 5056 bytes
font_01_sfnt_off00006f6a.bin
49574a4be693ac20b9f27d1b0f833e878ff227af1d723b70f8323c37a0dbe171
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 10152 bytes
font_02_sfnt_off00009240.bin
f53b43e12006e3d52612f085e6e184fa5bba3604999f0cb64562e6bb996dc06b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9240 16384 bytes