Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb9f0463266ee24…

MALICIOUS

PDF

55.2 KB Created: 2020-08-30 21:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5935b369d63153295b38d069c60f5429 SHA-1: e5800be8ae01ea6188c433af7eee919706a7dbed SHA-256: dbb9f0463266ee2477854147e7bb6eb108b24dbc80a3bcc4515f6520fe901f85
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector at 'https://ttraff.com/wix?keyword=che+guevara+books+pdf'. Another critical heuristic identified a large number of external PDF links, suggesting an SEO poisoning or link farm tactic. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. The primary goal appears to be directing users to malicious infrastructure.

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.com/wix?keyword=che+guevara+books+pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/minecraft_hour_of_code_level_12_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/fogedakiniwaboxufapinomaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/7454/1981/files/uncitral_model_law_on_international_commercial_arbitration_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/8389/0850/files/kofos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/jotowofanigigijava.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0d0913464c447e8d33514485477726.pdf
    • https://static.usrfiles.com/ugd/ef7b09_0724c238017440fd8618f78ef877c7a6.pdf
    • https://static.usrfiles.com/ugd/d1c05f_d8e9c9868dcb46358ef33abcccac48a4.pdf
    • https://static.usrfiles.com/ugd/c8a981_a14801eeaff742e4a5b102b2cc1ae4ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_d875483a2744488dac7ae11cefa3fc74.pdf
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/lacrosse_certificate_templates.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/candlestick_chart_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/the_giver_chapter_18.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/dosaleleraruditof.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/bofupuju.pdf
    • https://cdn.shopify.com/s/files/1/0459/8978/9855/files/rurobowakupu.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_off00007553.bin
b127de758f562d0fcc7927438da28e36c18bf411705937c8253711fdb67bf7a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7553 5440 bytes
font_01_sfnt_off000087ce.bin
f0c61cd240a273f1b7d3bcafc61497c3decfaa3aaf9cfbfceb06ca3cad45fa33
pdf-font-stream PDF embedded font (sfnt) at offset 0x87CE 10484 bytes
font_02_sfnt_off0000abea.bin
ec6130f00bfb884d65bfdeda95f254dc0d98667e1cf052748db50a701e415e9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xABEA 21648 bytes