Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1dc6a323fd784a5…

MALICIOUS

PDF

50.5 KB Created: 2020-08-12 08:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6b74a2ba29bceb1d5688b190962f3d1 SHA-1: 0a6344cc25dc2989ee3562131c099103f5983591 SHA-256: c1dc6a323fd784a5174f2f53ce6664183b5b20af25426234e79fe78b88f4d1ba
160 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text fragments and URLs that suggest an advance-fee scam lure, likely related to a lottery or prize. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=lic+jeevan+saral+chart+pdf
    • http://files.oxfordshire-epc.co.uk/uploads/1/3/0/7/130738915/tilejirov.pdf
    • http://zukito.hypnosisworkz-sp.com/uploads/1/3/1/8/131856626/bidak.pdf
    • http://files.marker99.com/uploads/1/3/1/4/131453429/rijijovopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1904/files/95740979196.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/32580168166.pdf
    • https://cdn.shopify.com/s/files/1/0443/0381/0716/files/el_mapa_del_autoestima.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/babofuvatafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/6318/8383/files/51584482879.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/arabic_alphabet_letters.pdf
    • https://cdn.shopify.com/s/files/1/0437/1572/3414/files/fuvigedeganap.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/56006897989.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/28297405104.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3462/4679/files/vumojipikunabulirawowa.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_off0000794f.bin
77d9a32654abee8c40e120ef6e4eec911498b927746c3f1509c70b278366e7c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x794F 5000 bytes
font_01_sfnt_off00008a43.bin
f19e5d55b225497d517d369827cb9d233cf77cc4ea0e7eb2b98cbef58adcb203
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A43 10812 bytes
font_02_sfnt_off0000aee9.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE9 4324 bytes