Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b1b4bd2fdcdf8f0…

MALICIOUS

PDF

48.9 KB Created: 2020-09-17 12:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 488a8697179958e588875580dde41638 SHA-1: 3ff88da8818ed58608a141bf796d2b9de752cdbb SHA-256: 8b1b4bd2fdcdf8f0c7960203270ffdcbe5f59a7cf968f780e489683af0715a84
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.me/wix?keyword=http+proxy+injector+apk+for+pc, which is likely used to direct users to a malicious site or download. The document body, though heavily obfuscated, contains references to 'Http proxy injector apk for pc', suggesting a lure for potentially unwanted software or malware.

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=http+proxy+injector+apk+for+pc
    • https://70788b07-890f-40f6-8ba5-991d76df910a.filesusr.com/ugd/0d002d_30439bac7c764417a1c858aad9386b33.pdf?index=true
    • https://5dbb5caf-9fb3-4b24-b028-03d4b67265b8.filesusr.com/ugd/6240f8_eddd299417c54aa3818c25de7216ff09.pdf?index=true
    • https://245c40e0-06a8-4ff2-98bd-507c91a79cb6.filesusr.com/ugd/8a4248_6984e7176a344ba18fba4c28334c264e.pdf?index=true
    • https://c57d7b91-ac11-418d-a646-f72d28a27fea.filesusr.com/ugd/e643da_c3dd1ad569f148f6b515c9e690291502.pdf?index=true
    • https://880a256f-6d76-46a1-8c50-b93378d58813.filesusr.com/ugd/3e7897_0056f719a69f4776a15564ef42f1ec3e.pdf?index=true
    • https://1049427a-812c-41bf-a9aa-698332506e33.filesusr.com/ugd/aa14a9_57488c3ee61d46b1b5e8ea34574e78c5.pdf?index=true
    • https://2c85b119-7fed-41b5-9861-bc0f78970c26.filesusr.com/ugd/8a4248_2cf57e85753c4e209d6ee6642abd5e50.pdf?index=true
    • https://0690cdd3-e8be-43df-9988-64827faf1452.filesusr.com/ugd/2074c9_89d8babb71494a06958b046dcc32b01e.pdf?index=true
    • https://4712a355-7cc8-48ae-9321-9c3135df4e86.filesusr.com/ugd/c70c35_942c6ae853784c838a03dfb7a6ba65be.pdf?index=true
    • https://609499c7-6585-4ddf-8c9b-9e56f89ed3db.filesusr.com/ugd/0ad6c7_251dfa9a0f6b4807aadea8e3504e002b.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/environmental_science_climate_graph_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdf
    • https://cdn.shopify.com/s/files/1/0447/1183/7850/files/divojivoximowaxiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4207/7846/files/horizontal_id_card_template_psd_free.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_off00006925.bin
07909b585383af7a8c8de3b79a225bdd38e2c4967d59cfc67febf8cf57f3d00d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6925 4856 bytes
font_01_sfnt_off000079bf.bin
fa70eefe2f56b6eaad31cdbca4fa82be55400ceb28fcd0fbe7745c8b056b81fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x79BF 15216 bytes
font_02_sfnt_off0000a8d2.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D2 4324 bytes