Malicious PDF — malware analysis report

Static analysis result for SHA-256 391cd2d15de41919…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 05:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eff70ddb6127d65ba5116a41622b9e9 SHA-1: 4ab59e4db5d2fe1166bf37fc609c6ed04a9712be SHA-256: 391cd2d15de41919a5f55821273cfd7fee1c3d8ffff9db9508f1ce1f9a046d8b
162 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a song ringtone download. This link leads to a link farm of other PDFs, indicating a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests that the document may be intended to trick the user into providing a password for an archive, likely to bypass security scanning. No scripts were extracted from this sample.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=bestwap+new+song+ringtone
    • http://xonuwa.chairelectoral.com/uploads/1/3/1/6/131636644/3700603.pdf
    • http://jawuma.abstractcollective.org/uploads/1/3/1/6/131636725/3d5c16b0e3ffd37.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2339/files/zalitolelariporidowof.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/bizibutonovedujebez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/abbasid_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/10881776167.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/vanidutoguremelika.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7321/files/30342207526.pdf
    • https://cdn.shopify.com/s/files/1/0438/8628/0872/files/tavofegomevovulixazom.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/canningvale_flannelette_sheets_review.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/55426169741.pdf
    • https://cdn.shopify.com/s/files/1/0433/5514/4347/files/latazijovedusozov.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9661/files/convert_to_jpg_online.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_off00005eef.bin
d2c38495960704ee9876f7456a46c62340c4fc7d48d13c2bd9f18e7a38185fd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEF 5096 bytes
font_01_sfnt_off0000706c.bin
3abad66ccbe0492e6242d77ce2e291cdf02a08c16dd33d322eabed46015b39f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x706C 10084 bytes

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