Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d1406bc515d36e…

MALICIOUS

PDF

58.1 KB Created: 2020-08-05 03:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91df2ad10d95590efbbe76543780dcf3 SHA-1: 439fa1adba8abaf18c192f26d7c72e6ef1bd4cae SHA-256: 50d1406bc515d36e06ee9d27dfba3329434000cc55933abcc053acf81edb7bef
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=araby+pdf+full+text'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, also contains the same URL, reinforcing its malicious intent. The presence of numerous other PDF links, while some are benign, suggests a link farm or SEO poisoning tactic to obscure the malicious redirect.

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/pify?keyword=araby+pdf+full+text
    • http://files.jennscookiecreations.com/uploads/1/3/2/3/132303001/fegizazigu.pdf
    • http://files.fusionsoapquilt.com/uploads/1/3/1/0/131070866/pimefekabe.pdf
    • http://files.thedreamershop.com/uploads/1/3/1/3/131383510/49f182f45e43e.pdf
    • http://zufejofi.chan-candy.com/uploads/1/3/0/8/130814252/7da81.pdf
    • http://files.artfulideasclassroom.com/uploads/1/3/1/3/131379183/juzukiragofotaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6451/6005/files/al_anon_12_steps_and_12_traditions.pdf
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/faguporikagudoxadilezawaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/ashokan_farewell_string_quartet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/waxigulazatep.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/dugemufifijejejatefig.pdf
    • https://cdn.shopify.com/s/files/1/0433/8165/3655/files/80857381642.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/anamika_academy_maths.pdf
    • https://cdn.shopify.com/s/files/1/0447/9556/0096/files/troy_bilt_pony_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4855/files/kimobazugikexel.pdf
    • https://cdn.shopify.com/s/files/1/0434/0223/1971/files/mulipode.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/figewobunalajomubefate.pdf
    • https://cdn.shopify.com/s/files/1/0429/5570/2425/files/muratozofoxudenatularilex.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_off0000a515.bin
5e1a21f1eb2fbdfd755b546a29e542fd7e57e127ab6d060884e1a3fc0d167f29
pdf-font-stream PDF embedded font (sfnt) at offset 0xA515 5156 bytes
font_01_sfnt_off0000b6b7.bin
a2a66d799c6d2d13ed50935b1864960742fa0d7114a59d295f814344f2117e17
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6B7 10720 bytes