Malicious PDF — malware analysis report

Static analysis result for SHA-256 5377b7ee0d6f1ff7…

MALICIOUS

PDF

35.8 KB Created: 2020-08-18 13:05:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abc166e4ef62bc9556da872afbd387a0 SHA-1: 534f35b12fb30d13cbf139c5f093fe5aebe2c1a6 SHA-256: 5377b7ee0d6f1ff74d4b7f18dd604f6b140905e732f0fe62d37ba25911ef569a
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bamboo+garden+menu+pdf'. The document body, though heavily obfuscated, contains references to 'Bamboo garden menu pdf' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious content. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or engage in SEO poisoning.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=bamboo+garden+menu+pdf
    • http://files.fountainplusasia.com/uploads/1/3/1/0/131070192/e28dffd08de046.pdf
    • http://files.potofgreenflorist.com/uploads/1/3/1/4/131438843/7e0ecffbecb2402.pdf
    • https://cdn.shopify.com/s/files/1/0437/1356/0731/files/xefed.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/90147047019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81599599528.pdf
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/gadozatuxuzosezofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4732/0728/files/69836386394.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6384338271.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/basujokulanetiribojemap.pdf
    • https://cdn.shopify.com/s/files/1/0431/6387/7537/files/58154156300.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/horrible_histories_angry_aztecs.pdf
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/bivovovuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/sesevusedusegate.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/wukuzena.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_off00004ddb.bin
4edf9b6d97b647592c8dff52ec936e25258dec1fde3217110191f3f85edda53d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDB 5340 bytes
font_01_sfnt_off00005fe9.bin
461811d9fd8fed11ae226425e735e40dd0183996f04bb2fa1818a0cf67eeadab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE9 10208 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.