Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8fe250e9b6907c…

MALICIOUS

PDF

46.1 KB Created: 2020-08-19 05:45:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 645d0577a4db3f127293abca6ebac521 SHA-1: 640d232b63e5c87674c4637e924a22943b6ad307 SHA-256: 2c8fe250e9b6907cc38b125ff5a34740fbc2f6569a105793d18ef620d3204a7b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but the primary link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'diathermy in surgery pdf'. This suggests the PDF is designed to trick users into clicking the malicious link, likely leading to a phishing page or malware download.

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=diathermy+in+surgery+pdf
    • http://files.aboundinlove.com/uploads/1/3/0/7/130739809/7e4b4a228c.pdf
    • http://newomadu.eveningstarvintage.com/uploads/1/3/1/6/131636648/5aa86.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/laretekekadeluzobagepak.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/pipebato.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/grimshaw_argument_structure.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/jamuxifetudozixewop.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/jutudexilazaweburazexero.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/823339421.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/lomadekikilixedekiwatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2437/5194/files/36640843340.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/waxexadasumof.pdf
    • https://cdn.shopify.com/s/files/1/0432/3406/6594/files/6096585446.pdf
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/50489793885.pdf
    • https://cdn.shopify.com/s/files/1/0443/5968/0156/files/java_jdk_8_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/dujew.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_off0000751e.bin
37f5701a9a7ff94c4eba27b6497387c10fa876006574f614a5afff9cdc9520bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x751E 5524 bytes
font_01_sfnt_off000087d1.bin
bcda3786cb7dac71c8e90cece7576596935477a97256347c96031a620a86b1cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87D1 10548 bytes

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