Malicious PDF — malware analysis report

Static analysis result for SHA-256 7df41b0cfa610a5d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-28 14:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 838c22743c050589bd0e12c61e123165 SHA-1: f0650a6dd97f0e31380f3018f0b59a8892b3874b SHA-256: 7df41b0cfa610a5dcefa413d2da8250a3a103b9e7b3a48099981e7091d19eff4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on various domains. One of the primary links redirects to a known malicious redirector infrastructure. This indicates a likely attempt to lure users to malicious content through a link farm. No scripts were extracted from this sample.

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.club/pify?keyword=quante+volte+dovresti+defragare+il+t
    • http://files.stillpointwellbeing.com/uploads/1/3/1/3/131398164/tupipivovadu_mejemadatuk_kaduwilir_digubuvod.pdf
    • http://meturigaz.sweetwaterlax.com/uploads/1/3/0/7/130740013/9984838.pdf
    • http://files.eurocse.org/uploads/1/3/0/7/130739678/papaxi.pdf
    • http://files.riseoverrunfit.com/uploads/1/3/1/3/131383512/vetevod.pdf
    • http://tubuxa.crazyforcarsblogs.com/uploads/1/3/2/7/132740978/buterorun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/rovijitepujusezeva.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/galesic_wikipedia_shqip.pdf
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/nobotipaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/7454/1981/files/hindu_astrology_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/60160696737.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/ponigesopadofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1314/files/40788571889.pdf
    • https://cdn.shopify.com/s/files/1/0430/3162/5882/files/18688811949.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_off0000619e.bin
092b112279a0cfdf19cf444a2056e6c5defe9e775d2776b61688b34bf882c495		 pdf-font-stream PDF embedded font (sfnt) at offset 0x619E 5196 bytes
font_01_sfnt_off00007369.bin
de25a28f528b9264f8a500808cf415ddd853e8ab88f5191c2badaf37c3e7329f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7369 11000 bytes

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