Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b5f15b481d9303…

MALICIOUS

PDF

41.0 KB Created: 2020-08-13 22:26:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91550f454c0200be28b2f156359469d0 SHA-1: ff653496459b4bf7e4c6954a671b02e1655456fc SHA-256: d7b5f15b481d9303d5d1fc0e8af135d4a4ef2da11fcfa77587c1f8754b6ac65e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=opera+sports+news+report'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links, many of which are to benign Shopify URLs but some are to unknown domains. The document body, though heavily obfuscated, contains the malicious URL, suggesting a lure to trick users into clicking through to a potentially harmful site.

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=opera+sports+news+report
    • http://files.lyncjohanson.com/uploads/1/3/0/7/130775603/629539.pdf
    • http://files.weferlawoffices.com/uploads/1/3/0/8/130873717/bomel_nisuviw.pdf
    • http://files.rostraversca.org/uploads/1/3/1/4/131438137/7908420.pdf
    • https://cdn.shopify.com/s/files/1/0438/6878/2757/files/abraham_hicks_focus_wheel.pdf
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/vowozipivonororobiregej.pdf
    • https://cdn.shopify.com/s/files/1/0436/0188/7396/files/jupyter_reload_module.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/26955660208.pdf
    • https://cdn.shopify.com/s/files/1/0433/9784/1063/files/aprender_kanjis_japoneses.pdf
    • https://cdn.shopify.com/s/files/1/0433/3669/5959/files/bowepatiwumilojawi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/lajomumizozawinivuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/zofajasedigos.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/linear_buckling_analysis_ansys_workbench.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/pepiviseboxoxiromu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/70312482992.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3614/files/non_probability_purposive_sampling.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_off000064b6.bin
df5375d3ed93044e02723dc8b7d2544c2feff023b3a1ce621a27b1b5e10efcc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 4900 bytes
font_01_sfnt_off0000757b.bin
12332f6f78000a83b27bfa92e79509985492edd1b3ad60a7d8742515d7a32a09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x757B 10100 bytes

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