Malicious PDF — malware analysis report

Static analysis result for SHA-256 efe0ee0c52a9408b…

MALICIOUS

PDF

47.1 KB Created: 2020-08-16 19:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6786870eb27dda4b2685852463a8ce0f SHA-1: bae71b781fbd8a46aa2c7848d92f57794d543cb7 SHA-256: efe0ee0c52a9408b282101edbed74b9ebdd0257784c6c8113110d923fad7aab1
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL. The presence of a link farm heuristic further indicates an attempt to direct users to external sites, likely for malicious purposes such as phishing or malware delivery.

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.ru/pify?keyword=choices+mod+apk+unlimited
    • http://nujowuba.angelwolfcomics.com/uploads/1/3/1/6/131606578/vetuvetiseje.pdf
    • http://files.salon-alphonse.com/uploads/1/3/1/4/131452902/50671.pdf
    • http://files.candeelandproductions.com/uploads/1/3/0/7/130775138/fulepijepokogujane.pdf
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/vufemoposire.pdf
    • https://cdn.shopify.com/s/files/1/0434/7183/1193/files/53664485820.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/muledakuvisobajej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/minecraft_oak_tree.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/89746960104.pdf
    • https://cdn.shopify.com/s/files/1/0431/8219/4847/files/15438743623.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/dipajimanivupogi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6400/7585/files/shockwave_free_daily_jigsaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2485/files/zuludaxeparoremamej.pdf
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/gobipuvuxadewefuv.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_off00006634.bin
a83b29cf7b68ecc07278c93f53c81301ba5fed351248e0f773f55d4162c1beae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6634 5188 bytes
font_01_sfnt_off000077ae.bin
f8cfc8a58823933f0a21be66eb56e830b533f36f0e11cdde2e3564eae4914172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77AE 10132 bytes
font_02_sfnt_off00009aac.bin
7c46bdd5995085f1b667db334183647021a114cb1e9de6240a6a2392c095f0cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAC 16144 bytes

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