Malicious PDF — malware analysis report

Static analysis result for SHA-256 25270007b853f7ba…

MALICIOUS

PDF

40.0 KB Created: 2020-08-10 13:17:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b744b1e8eb1de3cbcfcbb9ac1a22e25b SHA-1: 40213bcdccca7538295129f276e845f7da75eb33 SHA-256: 25270007b853f7ba8e331df2c57f375d1d633592ce77480472400351b5337ad0
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to a known malicious domain, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to 'nfhs basketball rules book 2020 18 pdf' and the malicious URL, indicating an attempt to disguise the malicious intent with a seemingly relevant topic. The presence of numerous Shopify-hosted links, some confirmed benign, alongside the malicious redirector, points to a strategy of blending malicious content with legitimate-looking resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=nfhs+basketball+rules+book+2020+18+pdf
    • http://files.portablenyctours.com/uploads/1/3/0/9/130969440/e4b32.pdf
    • http://files.furmansleeplab.com/uploads/1/3/0/8/130873708/turugimuguw-zomoto.pdf
    • http://files.libertyhealthandbeauty.com/uploads/1/3/1/4/131438449/ramasuza.pdf
    • http://files.marniefanegastudio.com/uploads/1/3/1/6/131606874/jebovanijefagu_garitu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5756/files/principles_of_how_to_win_friends.pdf
    • https://cdn.shopify.com/s/files/1/0434/8503/6706/files/boz_scaggs_setlist.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/26496187659.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3809/files/wijimugotare.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/xixekusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/67018970868.pdf
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/62497446836.pdf
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/sears_floor_jack.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6791/files/67411212098.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_off00005ad2.bin
0e7edb1c5e7dca21a97b044ad7a54d31774c2035b24b5b5c2c6bd6018d339958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD2 5824 bytes
font_01_sfnt_off00006e98.bin
d7d6f663ef2623bc34a95beaf29b859d476043ad36c129b320461ac3bc2001db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E98 11228 bytes

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