Malicious PDF — malware analysis report

Static analysis result for SHA-256 95472121fd9a68a0…

MALICIOUS

PDF

43.1 KB Created: 2020-08-31 07:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4bde31fa662c1aa1e9381aafa258680 SHA-1: 9d5bef47bcbaf128684b99c7be200d5e13d8c19d SHA-256: 95472121fd9a68a05553713cfc90748000c9b3eabc7b7737b03385c7477823a0
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure for cracked software, specifically 'Mrhythmizer mac crack'. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many pointing to benign-looking PDFs hosted on Shopify, likely part of a link farm to improve search engine ranking for the malicious lure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=mrhythmizer+mac+crack
    • https://static.usrfiles.com/ugd/b8c837_82215c7f92a84d68842c521fdb60dc0b.pdf
    • https://static.usrfiles.com/ugd/3bf302_ab5c654efcf44b0caccc4fe88244b59d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fea7b79cd52c4594bcfd75c3de00e607.pdf
    • https://static.usrfiles.com/ugd/136d07_596aa9fced7a44fa83bd261cb1c52121.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/86297667237.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/bharat_ratna_award_list_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2668/5858/files/16105022710.pdf
    • https://cdn.shopify.com/s/files/1/0431/7744/3483/files/xawudekimafetutexifatuto.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/8074018120.pdf
    • https://static.usrfiles.com/ugd/b8c837_89ca5d07582545b3a6e3f7cf3843dbbc.pdf
    • https://static.usrfiles.com/ugd/e5a943_0d8634f9d0554f4f8395a573bc596d88.pdf
    • https://static.usrfiles.com/ugd/5bb01c_cba422f245004c9d89ddddc7a317f214.pdf
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/dibuxejelim.pdf
    • https://cdn.shopify.com/s/files/1/0437/5730/6007/files/longport_nj_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/6237/8139/files/36055076522.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_off00006acd.bin
f19ecb5f2e05d501545c8a1eb9e657e40262511f151ca8af6b9279586cbec805
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACD 5052 bytes
font_01_sfnt_off00007be1.bin
d255618f390b3becd3a94f87ca2df6deee757e2549fec5d3d77205ee592a38d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 10536 bytes