Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf744cf259e48ea2…

MALICIOUS

PDF

46.8 KB Created: 2020-09-17 04:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ecfc0746eafbfd83d59a903439e286f SHA-1: 66debf864ebf0ac854b663a3a6e2af7f0878d442 SHA-256: bf744cf259e48ea2f554734ed2b9a40a9891ba9ef267d28bd74f3d563088dc13
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, both associated with malicious activity. The document body, though corrupted, contains text referencing 'nba 2k19 apk download for ios', suggesting a lure for users seeking that content. The primary malicious URL is https://ttraff.link/wix?keyword=nba+2k19+apk+download+for+ios, which likely leads to further malicious downloads or phishing pages.

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.link/wix?keyword=nba+2k19+apk+download+for+ios
    • http://files.lostvalleyobservatory.com/uploads/1/3/2/7/132740723/f3338.pdf
    • http://files.powdercoatprosnd.com/uploads/1/3/1/3/131380347/kerepa_zanujag_xerakapopenula.pdf
    • https://472cfae0-ce9b-4140-b7b4-29e20dda3fd6.filesusr.com/ugd/d51d36_9d19a4fd7b06406ab512e8e17bfdd8cc.pdf?index=true
    • https://6c36255e-896a-4394-8443-da524a598a1b.filesusr.com/ugd/b7306e_790db478af7244b58e101a07102707cf.pdf?index=true
    • https://5a64510a-3352-441b-a8f7-d80ef7983014.filesusr.com/ugd/8da65f_77eb815a4aa84fce9fc489812e9fd7cf.pdf?index=true
    • https://484172f1-5be6-46fa-ac7a-0477173bbfde.filesusr.com/ugd/0d018b_02eea8dcac5c48a1ba1cbaf6e828ee98.pdf?index=true
    • https://43735a3a-cef6-4254-91a4-243858697576.filesusr.com/ugd/c638b7_93ce6647c35243e88b1498f47998c96b.pdf?index=true
    • https://bdb43da8-baaa-46c1-8b5b-c8ba742dec45.filesusr.com/ugd/4d400c_f8e69811c8e84ee28a9d03fc1cb71b57.pdf?index=true
    • https://2b2525f4-bcaa-4d6d-995d-d6e50d37ad57.filesusr.com/ugd/64bd79_d7cac744107b4ac2822535e09e764591.pdf?index=true
    • https://cd07a1bb-2a4d-4fee-aa79-3f5b32525e40.filesusr.com/ugd/704988_ed7c90002f4e4082b9fff1eb77e77301.pdf?index=true
    • https://ffb59e13-6103-45cd-923a-7e3942773e31.filesusr.com/ugd/d4a9d6_f7f16f1e5273443bb3294b4beffdb791.pdf?index=true
    • https://95428146-d624-4a8d-8f32-21118efee38a.filesusr.com/ugd/717a42_50d9886c6bcf4368aabdaf67374700ff.pdf?index=true
    • https://a69e3079-334d-41ae-9062-708b5bbf0f71.filesusr.com/ugd/90423f_de2822b4670441dca01b1c7d4c6cc0c3.pdf?index=true
    • https://60ff4feb-358c-4547-bc02-1fb760d4c820.filesusr.com/ugd/868401_1b23754d39b444ba9d15a2483d698c65.pdf?index=true
    • 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_off00006afc.bin
d83ff98bc0df00edd8322437e4c361a89125d6acf5fefe166f37bee0ee80638d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFC 5228 bytes
font_01_sfnt_off00007cd1.bin
9d4b14579d79fe4f545dc0e45acfff59855171347f9e7a56f34b3066208eef8a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD1 10340 bytes
font_02_sfnt_off0000a03d.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA03D 4324 bytes