Malicious PDF — malware analysis report

Static analysis result for SHA-256 90714c042ac071ad…

MALICIOUS

PDF

40.6 KB Created: 2020-08-29 21:58:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 606a6992709edc2c660c8b7f3c7f9c4c SHA-1: 77d8010287cb9b08bed29fcc7f7177656c6a565f SHA-256: 90714c042ac071ad6e8b883a91fe06c5b4d44898ecc67b3b7b392943a30cca33
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.club/wix?keyword=tim+hawkins+new+dvd'. This URL is presented in the document body, suggesting a lure to a malicious site. The PDF also contains a mass external link farm, with many links pointing to static.usrfiles.com, indicating a potential SEO poisoning or link farm strategy to distribute malicious content. No scripts were extracted, but the presence of a malicious redirector and link farm strongly suggests a phishing or malware distribution attempt.

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/wix?keyword=tim+hawkins+new+dvd
    • https://static.usrfiles.com/ugd/d775a9_e16039a989374e9d990e0c3acb64991a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2bdaabe6eac49cabe9427dcaf520c74.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ed6f6ed7cc54df5bfc99d64364d70cb.pdf
    • https://cdn.shopify.com/s/files/1/0431/5358/8390/files/79073746335.pdf
    • https://cdn.shopify.com/s/files/1/0440/8328/2070/files/axar_publication_maths_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/2526/8889/files/tuzamopogowanofaxadavezun.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/biblia_de_estudio_thompson_en.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/9516760689.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/printable_assertiveness_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/mark_fisher_capitalist_realism.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1607/files/hepatitis_a_cdc_fact_sheet.pdf
    • https://static.usrfiles.com/ugd/b8c837_824834d97be84c3589c608d1eae0b7e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e879196731f4fcd8f61cb0a8b758c74.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fb4484087e64ace9d7fdfd0b98e83e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6be1c08ab6f04fba8c62b1b55f411067.pdf
    • https://static.usrfiles.com/ugd/b8c837_c773afb0a1c040b3abcb07471c7f7c08.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_off00006239.bin
e841eb93112773eaccbefd9f8d00fe20c9ac9b31407d84b5aa086402f2601c28
pdf-font-stream PDF embedded font (sfnt) at offset 0x6239 5104 bytes
font_01_sfnt_off00007386.bin
33ce61a0c4eb4ce2be161d4520d5d4354e56e4473a178a5cc1549454c0583239
pdf-font-stream PDF embedded font (sfnt) at offset 0x7386 10060 bytes