Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcdfbd36ddf611a…

MALICIOUS

PDF

46.1 KB Created: 2020-08-24 00:13:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72827adc94700c01eb197d89b89dc5fe SHA-1: bd0bf978cfda63d4f26e674f3153df10de6a7ee3 SHA-256: 2dcdfbd36ddf611a5720a3a263631aa663b87211d561d881f94b30041d0dd6f1
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=psd+templates+wedding'. This indicates a phishing or social engineering attempt to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, contains this URL and other links, suggesting the primary purpose is to drive traffic to the redirector. The presence of numerous external PDF links, as flagged by the PDF_SEO_LINK_FARM heuristic, further supports the social engineering lure.

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=psd+templates+wedding
    • http://ripovud.timsguitar.net/uploads/1/3/1/3/131378898/gamus-sedexopusomuzap.pdf
    • http://xapebimor.lisaworkman.com/uploads/1/3/2/7/132712050/zavajivigejowufas.pdf
    • http://fovomote.educationtimeline.com/uploads/1/3/2/6/132682659/1813349.pdf
    • http://files.walkingandreading.ca/uploads/1/3/1/8/131856723/temofirijijajadozepo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4989/1493/files/34871642619.pdf
    • https://cdn.shopify.com/s/files/1/0436/2534/9273/files/bhimavaram_bullodu_movie_songs_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/81179181253.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/95184414808.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/jivavodoriraxatasosub.pdf
    • https://cdn.shopify.com/s/files/1/0436/7450/1285/files/78990486949.pdf
    • https://cdn.shopify.com/s/files/1/0432/3121/5774/files/60391454199.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/44843290087.pdf
    • https://cdn.shopify.com/s/files/1/0437/7935/8869/files/gastroenteritis_aguda_en_el_adulto.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/jasaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/54433373487.pdf
    • https://cdn.shopify.com/s/files/1/0437/6598/9530/files/96918804326.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_off00006ce0.bin
946c41f93969a64e4c5b1edece2723d2d96785d449f65547a2adddd42b657784
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE0 5276 bytes
font_01_sfnt_off00007ecb.bin
8db65adc699bed2ed4e99b174e414cace916d9ae25f4e5597e3d94de4d1667c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECB 2116 bytes
font_02_sfnt_off00008873.bin
6ad106c5431c896f1c25a7569417d155e65c6fdbc5cf92a624da2bae522fdac0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8873 10184 bytes