Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08654338948eae8…

MALICIOUS

PDF

52.6 KB Created: 2020-09-15 06:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d20c2a3e751a0fb44209c3ef7d1e489 SHA-1: 6838c7ec2371a0f00ac7c5154e99f061c835bbb1 SHA-256: f08654338948eae837feaf8fa4ee7fbb074d085d5d7d4e2d73a72d3cbc880096
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=bfw+publishers+ap+statistics+chapter+5+test+answers'. The document body and embedded links suggest a lure related to academic materials, specifically 'bfw publishers ap statistics chapter 5 test answers'. The presence of a link farm heuristic further indicates malicious intent to distribute links. 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.me/pify?keyword=bfw+publishers+ap+statistics+chapter+5+test+answers
    • https://static.usrfiles.com/ugd/538d67_777d63d1690a41808a5b5e5d749314a1.pdf
    • https://static.usrfiles.com/ugd/89c6ad_40df45a5a5184b68a91dc1efa0500f45.pdf
    • https://static.usrfiles.com/ugd/739437_8a3f746437e74b12a34941ec14351799.pdf
    • https://static.usrfiles.com/ugd/e643da_a7e29c847610427b80e0a77f0368458c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c5e2d96e8b664eca90f671195c5a7cb4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/at_t_u_verse_guide_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/tilodixexedowitedarij.pdf
    • https://cdn.shopify.com/s/files/1/0440/9619/2664/files/active_learning_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/graphing_rational_functions_practice_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6824/files/varijerogonejufevovumudaw.pdf
    • https://static.usrfiles.com/ugd/4b874d_c9dad9436544406a86700233070ff08c.pdf
    • https://static.usrfiles.com/ugd/7c1f05_43f6de0cd37c4eac994a1020b5f81799.pdf
    • https://static.usrfiles.com/ugd/405339_11545becb6a74d6d8f74e2c405a0a0cd.pdf
    • https://static.usrfiles.com/ugd/4fea5c_bddae89351254136a386724b11fbd1ba.pdf
    • https://static.usrfiles.com/ugd/b56239_ef9fe14427df428985cb4f4c415b55ab.pdf
    • https://static.usrfiles.com/ugd/cc1a03_e66d5393584c4877b49d377cd31daee0.pdf
    • https://static.usrfiles.com/ugd/af0aa9_c02e22481ef648cfadfce4e51ea7e21f.pdf
    • https://static.usrfiles.com/ugd/e3ff21_3c30a2ed43fa49f194f95988ef424d74.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_off000089ae.bin
4e6e1103f7c600de61d8d0450993673730fb658e2e124686435b65f4f03b3043
pdf-font-stream PDF embedded font (sfnt) at offset 0x89AE 5508 bytes
font_01_sfnt_off00009c7d.bin
9c044676463252ea625dcb788050fd471fa65ae7065987bb2136a7748bc20922
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7D 12148 bytes