Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddd056e116f8b69…

MALICIOUS

PDF

50.2 KB Created: 2020-08-02 23:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 239fa1c1888479837c8e0888774e879a SHA-1: bab4dee6845a1199c5940b34e01908041aa77b64 SHA-256: dddd056e116f8b692f35dc6d173312d0de8f4e073ea586f64ac8120018183895
162 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits a PDF link farm, with numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=create+tiny+url', which is flagged as malicious. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be part of a multi-stage attack, potentially using a password to bypass initial scanning before delivering a payload.

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.cc/pify?keyword=create+tiny+url
    • http://files.bigskysucculents.com/uploads/1/3/1/3/131398091/6035133.pdf
    • http://files.goodnews4thecounty.com/uploads/1/3/1/4/131437711/vilusotewamo-mizojisefug-tadinewepe.pdf
    • http://files.touchingchi.com/uploads/1/3/1/8/131856105/sekemidafulawip.pdf
    • http://files.andreaenglandart.com/uploads/1/3/1/8/131872096/zoloro-mojukafiku-nakomazun.pdf
    • https://cdn.shopify.com/s/files/1/0433/4410/1544/files/47980738971.pdf
    • https://cdn.shopify.com/s/files/1/0431/6073/1799/files/17633141922.pdf
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/91532020122.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/jaxifuxukapare.pdf
    • https://cdn.shopify.com/s/files/1/0435/4120/1064/files/jovewunamelulami.pdf
    • https://cdn.shopify.com/s/files/1/0430/8828/1761/files/dugamusabakoberemisevin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/26082598372.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0862/files/11318764023.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/palakazutureses.pdf
    • https://cdn.shopify.com/s/files/1/0434/4233/9992/files/58959595477.pdf
    • https://cdn.shopify.com/s/files/1/0431/7400/2848/files/7020750236.pdf
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/gokirozurixewixefasi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/taxajuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2036/1629/files/jiworevuz.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_off0000879d.bin
f3eb5dc08b52943bdf31e0f83b7b80ac0a0f804a664c14eb5a5fc7f1c7bbe61b
pdf-font-stream PDF embedded font (sfnt) at offset 0x879D 4508 bytes
font_01_sfnt_off00009701.bin
e2de7ea8033f8f9d386d4580ca86be393f61c21e4fcadcdb782a9f99b9cc0b32
pdf-font-stream PDF embedded font (sfnt) at offset 0x9701 11484 bytes