Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc5bab9dbbc5f68a…

MALICIOUS

PDF

37.0 KB Created: 2020-08-22 02:58:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f50281f0c4e1c3604cac09a420a56cc SHA-1: 23859ffd2557f39e1f8be342223718c2104d846a SHA-256: bc5bab9dbbc5f68a2c64a851569d815e8bbf9b6efa95f0c5f3f44cb369cae988
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to a "circle floral border template" and includes the malicious URL. This suggests the document is designed to trick users into visiting the redirector, likely as part of a phishing or scam campaign.

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=circle+floral+border+template
    • http://sidowam.thephillykitty.org/uploads/1/3/0/7/130740450/jusik.pdf
    • http://watane.thefairyhostel.com/uploads/1/3/0/8/130813557/xewurobajujatoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3784/files/manual_pratico_de_auriculoterapia.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/98863467164.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/tinashe_2_on_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/84815596833.pdf
    • https://cdn.shopify.com/s/files/1/0436/6109/9161/files/sibisaxofinufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/zakonemoxaxoxugesejisugop.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/wow_blacksmithing_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6392/7203/files/lavajakeworedoxebiwazoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/67821137605.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/fundamentals_of_c_language_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/cambridge_checkpoint_science_workbook_3.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/21756738336.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/cinquenta_tons_de_liberdade_grey.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_off000053dc.bin
9f04b148d849d6d141da85bfa3dea5efdcdcad9b508d0d94b1620ee008cbb812		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53DC 5168 bytes
font_01_sfnt_off00006547.bin
c02a51760a8b37e090b682c983ac6355b9ccc681d9e21aff46a78b093edde7ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6547 9860 bytes

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