Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c0f66529f04435…

MALICIOUS

PDF

40.8 KB Created: 2020-08-10 06:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a8698968f4ffcd61db79532f51c65c1 SHA-1: 82849a95d41d78b79834e83b4939cfc0c6fb4b2e SHA-256: f3c0f66529f044355cce34a935d7242715db7072d1fcbd2d0b8388abda769b95
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=genetics+book+by+pk+gupta+pdf', suggesting a lure to download a genetics book PDF. The presence of multiple external PDF links, including those hosted on Shopify, indicates a link farm strategy to improve search engine ranking and distribute malicious content. 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.cc/pify?keyword=genetics+book+by+pk+gupta+pdf
    • http://files.funelteacher.com/uploads/1/3/1/0/131070866/bavup.pdf
    • http://files.shaluksgardensolutions.com/uploads/1/3/1/3/131379085/3375471.pdf
    • http://files.explorebeyondborders.com/uploads/1/3/0/7/130776607/39824de6d0d1.pdf
    • http://files.raphaelschwartzman.com/uploads/1/3/1/3/131380263/c2055e13f1cfc54.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/77162061371.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2931/files/apoptosis_in_cancer_cells.pdf
    • https://cdn.shopify.com/s/files/1/0435/1744/4264/files/g_shock_ga_100_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/simurafopunewewufi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8577/files/15831263415.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4449/files/famekajofulekosubokuguwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/55241932017.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0434/1537/1932/files/55671300674.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/51452569326.pdf
    • https://cdn.shopify.com/s/files/1/0428/0378/9991/files/moneka.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3899/files/vodorelizoruso.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_off00004bbd.bin
e6389ce7b7022a390ff015668eab235259d5fdf1efef4eb275b7d942dde69d6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BBD 5532 bytes
font_01_sfnt_off00005eb5.bin
77d89c949e930af1773944f465df72653c0ce254a5cf72e03c835f46be9ffeee
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB5 9916 bytes
font_02_sfnt_off000080db.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8
pdf-font-stream PDF embedded font (sfnt) at offset 0x80DB 16164 bytes