Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25b7615f3ca80cd…

MALICIOUS

PDF

40.5 KB Created: 2020-08-20 02:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5857cf27dc848b778118270ec08e7f5e SHA-1: 676f2b12c9504e1df448ad013dd52e16c7e3cbb8 SHA-256: c25b7615f3ca80cdde5109c1c73447d466d8abd7b6a940d2da4217b7c9d4b8a2
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to Android permissions and the malicious URL 'https://ttraff.cc/pify?keyword=android+accelerometer+sensor+permission'. This suggests the document is a lure to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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.cc/pify?keyword=android+accelerometer+sensor+permission
    • http://dofoto.facedoctorscoopers.co.nz/uploads/1/3/2/8/132814930/dabufidoxu.pdf
    • http://files.masakiphotography.com/uploads/1/3/0/8/130874369/zokolitibixuwatax.pdf
    • http://lanini.karenepoirier.com/uploads/1/3/0/8/130813765/c1dbcfc0d22134.pdf
    • http://files.africanpromiseexp.com/uploads/1/3/1/4/131437623/3138081.pdf
    • http://files.nolanthomascoffey.com/uploads/1/3/1/3/131378950/nomojanenagak.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/25312044973.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/43370964600.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/luruvem.pdf
    • https://cdn.shopify.com/s/files/1/0433/7106/9594/files/bunumabarevogurew.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/82904988686.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9541/files/ponarura.pdf
    • https://cdn.shopify.com/s/files/1/0454/4820/0342/files/dresden_files_rpg_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/66415272984.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/cell_cycle_and_cell_division_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/bratstvo_crnog_bodea_19.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6421/files/lutopimiwotuxut.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/doguporabaxadubijurelu.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_off0000604c.bin
34a3dc269b6e2f3edfd9c20f9b3e8e07d65ace9ef153164171cf488ba6ddf4ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604C 5208 bytes
font_01_sfnt_off000071e3.bin
cab42ee82826b27f0867b51a52a2344162972fbd7297c343b6a54f46786289b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71E3 10252 bytes

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