Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba5017aa9539d29…

MALICIOUS

PDF

40.5 KB Created: 2020-08-23 18:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b54c4b20cb912b600115af6535ecf25e SHA-1: e8b2addb95fc4b3d65bc87a479a35f3a9798d314 SHA-256: fba5017aa9539d2999afb69ee433311f4ccf394d25c14d2b3caa628993644180
150 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 for a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.com/pify?keyword=bheema+video+songs++tamilhq
    • http://xemufuxad.gotoplanetarium.com/uploads/1/3/1/4/131483348/juzova_nuxavenowexe.pdf
    • http://files.westernfarmhouse.com/uploads/1/3/1/4/131455956/359008e2fbda04.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/zipeduxetezijomu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6479/files/49107719245.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/40._069104_76._77355999999997.pdf
    • https://cdn.shopify.com/s/files/1/0433/1316/8542/files/20583826940.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/haynes_chinese_scooter_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/30676293864.pdf
    • https://cdn.shopify.com/s/files/1/0429/2011/6387/files/tegupafufodiveg.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/26260341249.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/sosub.pdf
    • https://cdn.shopify.com/s/files/1/0428/3524/7271/files/77478271438.pdf
    • https://cdn.shopify.com/s/files/1/0430/8621/7365/files/nugigefupelap.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_off00005311.bin
9119ad257cd1464d122f4a8c69240d5e37566cdcfaee8c7ecb2e7937448bb6ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5311 5164 bytes
font_01_sfnt_off00006482.bin
134707829f643a2d15c6de47893bce167e9014c3ac921a45fa9ccd877cca2265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6482 10204 bytes
font_02_sfnt_off0000873c.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 4324 bytes

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