Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c364ad8795193d…

MALICIOUS

PDF

72.8 KB Created: 2020-08-10 02:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b19ddc1db66ea71e4278b4474583566 SHA-1: c620c838896815725e26235f6d8700fceba0ed66 SHA-256: f8c364ad8795193dee84370f73bfc5b1dbdfa470326cc5e8df9373a08df2afb6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, many of which point to a redirector service known to host malicious content. The document body and embedded links suggest a lure related to academic content, likely to trick users into visiting the malicious redirector. The presence of a link farm heuristic further supports the malicious intent of distributing links 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.cc/pify?keyword=plant+amino+acids+biochemistry+and+biotechnology+pdf
    • http://files.lomimassagetraining.com.au/uploads/1/3/1/6/131606118/cc37f68dc37c46.pdf
    • http://files.pain.euroconferences.org/uploads/1/3/0/7/130739991/7576182.pdf
    • http://files.soclumsyinheels.com/uploads/1/3/0/7/130739398/nawizagede-wajewisaz-nafuvumaraz.pdf
    • http://ruxapi.revolutiontoursinc.com/uploads/1/3/0/9/130969204/2839651d6ae6.pdf
    • http://files.spirehomeinspection.net/uploads/1/3/2/3/132302896/6fe07.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/11157591593.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/podinobajofojip.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/62481308112.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/zonitepad.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/20796480085.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/navy_seals_fitness.pdf
    • https://cdn.shopify.com/s/files/1/0432/6719/5040/files/siwotujupedal.pdf
    • https://cdn.shopify.com/s/files/1/0434/5774/0967/files/undrip_text.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/divoguxeponu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8181/0599/files/30822301303.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofes.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/49843924598.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/41486695831.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_off0000dbcd.bin
52abc5e85b829eee923fd7f22cfae8fa976c5f40729a7f9df5f1bf0d988bb7db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCD 5812 bytes
font_01_sfnt_off0000ef73.bin
a7cd2a4b9a79f46a39da31256c4b38885da8b2aed75c9629c9a5c196ae58e9a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF73 11556 bytes

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