Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac227d8121efd02…

MALICIOUS

PDF

45.5 KB Created: 2020-08-21 21:22:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebf99a7c9e4dc16c3e67a69006a547a1 SHA-1: a281ebbaca0e1323487fb59c7b55191f3c0e651e SHA-256: cac227d8121efd02c71aebe3160db9b18c6a455e058a01fee2282373393552e9
130 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely for SEO poisoning. One critical heuristic indicates a malicious redirector link to 'ttraff.com'. The document body contains text related to an 'Rbi grade b application form' and includes a call-to-action phrase, further supporting a phishing or scam lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=rbi+grade+b+application+form
    • http://zasug.leadfromhere.com/uploads/1/3/0/7/130775388/7292700.pdf
    • http://suvitu.alittletong.com/uploads/1/3/2/8/132814664/6f2a96.pdf
    • https://cdn.shopify.com/s/files/1/0439/1324/8923/files/damofumew.pdf
    • https://cdn.shopify.com/s/files/1/0437/8175/0941/files/58004135326.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9738/files/circumpolar_constellations_crossword_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/33279145905.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/56571790974.pdf
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/nevonobolinisotewifak.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/65569886033.pdf
    • https://cdn.shopify.com/s/files/1/0440/0293/4942/files/oracle_forms_insert_into_view.pdf
    • https://cdn.shopify.com/s/files/1/0436/9891/3435/files/limibuzabi.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_off0000671d.bin
33f63ff9fbabc5662e52d54cf5b5ab24c164adee830d551a1c18227439dc4b7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671D 5232 bytes
font_01_sfnt_off000078cc.bin
b81a7263dce69905ab94ec7079fafddbfaf6ddfb67b0220b5ee78447533e053b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CC 10152 bytes
font_02_sfnt_off00009b89.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B89 4324 bytes

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