Malicious PDF — malware analysis report

Static analysis result for SHA-256 91b3da53d9af28c0…

MALICIOUS

PDF

56.0 KB Created: 2020-09-01 08:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9067f02004214137fa60beb15e73f66c SHA-1: 0969130e4adff6a47301bf6fd43239cb593e6268 SHA-256: 91b3da53d9af28c07d1bac01a5c2e944c63def9c9c5bafd9fa1e311fd7c412f4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to movie downloads, suggesting a lure to entice users to click the malicious link. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating an attempt to drive traffic to potentially harmful sites.

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/wix?keyword=bgm+movies+2015+free++malayalam
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/69333400473.pdf
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/22271121326.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/darkening_of_tristram_2019_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/free_indesign_architecture_portfolio_layout_templates.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_33321bad1c22434ea14a490a165a8de2.pdf
    • https://static.usrfiles.com/ugd/f6a907_5b934390db29471caaf61451318c376a.pdf
    • https://static.usrfiles.com/ugd/e643da_f15b66fbcf884562b9180944d4630d80.pdf
    • https://static.usrfiles.com/ugd/b85eb0_054d84c8dab84b089237ca548b0a0995.pdf
    • https://cdn.shopify.com/s/files/1/0428/6359/1590/files/momidovajilowowepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/rasojomiribodadujedixak.pdf
    • https://cdn.shopify.com/s/files/1/0432/9930/7673/files/3291960353.pdf
    • https://cdn.shopify.com/s/files/1/0440/5588/8022/files/7375510677.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65621046881.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/nivewedoxovapanamoti.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/13428276358.pdf
    • https://cdn.shopify.com/s/files/1/0435/4863/9391/files/pdf_datasheet_pic16f877a.pdf
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/6130959503.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00008605.bin
1d9000521593bb4190379a1b54281b2ccc047e3edb4592d2cef48c491260e359
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8605 5504 bytes
font_00_sfnt_off00007271.bin
fcac52510a95add8561b00965ff3cd07f2fe3d94716a12e4ec44b04abfd6c0d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7271 5748 bytes
font_02_sfnt_off00009a2a.bin
f51002a304c412c3207f4b17cdc2e5706f8cfb2889dadaaf0ca20e7165a1980e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A2A 10152 bytes
font_03_sfnt_off0000bd35.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD35 16164 bytes