Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5f0f433ad444ae…

MALICIOUS

PDF

45.0 KB Created: 2020-09-08 16:39:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e1a90bdaf4b9226ff5b3ae350d08cc5 SHA-1: 215a347872b658bf8a5ef38fdb83dc0e51315a53 SHA-256: 9d5f0f433ad444ae26773501823a5e8abff194a7e09e90e8e9dc29346d6b78e6
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm designed to improve search engine rankings. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.me/wix?keyword=how+to+remove+duplicates+from+excel+sheet'. This suggests the document is part of a phishing or scam campaign, using SEO techniques to distribute malicious links.

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.me/wix?keyword=how+to+remove+duplicates+from+excel+sheet
    • https://static.usrfiles.com/ugd/912de2_504c3e36084d4a92bf123231cbd3767e.pdf
    • https://static.usrfiles.com/ugd/b7ed05_b8f0e9e6df734d2c8786505874e13161.pdf
    • https://static.usrfiles.com/ugd/8de238_d2e58c65f9794ebba07652af8d48e9c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_97af487722aa4dc08d086975bf48716b.pdf
    • https://static.usrfiles.com/ugd/c722c2_c76fdcea30f5477db31855c6c4994383.pdf
    • https://cdn.shopify.com/s/files/1/0430/7347/0618/files/41438322607.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3544/files/scantron_sheet_prc.pdf
    • https://cdn.shopify.com/s/files/1/0435/6407/3128/files/purabefokad.pdf
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/2850461521.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/59524093853.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/lezumewojujepujupizude.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/apc_back-_ups_pro_1500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/advanced_password_recovery_professional.pdf
    • https://cdn.shopify.com/s/files/1/0469/3383/5931/files/analyst_report_format.pdf
    • https://static.usrfiles.com/ugd/c1de29_1fe3e806f7a641f89d9a3d0f59896832.pdf
    • https://static.usrfiles.com/ugd/e5412a_93fe93f1909b474a9e06e94c4e4db23c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ca.bin
6cac644dd1c8d4e1d32d7580c7d312db100fbbd5bd9320992bea4a512d02ad17
pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 5352 bytes
font_01_sfnt_off00007717.bin
ce72a0d04a37be5e8640cbd2716d6f3670ef3030105c9df228f78a5e19af45c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7717 9964 bytes
font_02_sfnt_off000098fc.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x98FC 4324 bytes