Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cebf6adfae1a291…

MALICIOUS

PDF

51.7 KB Created: 2020-08-31 08:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 589198b93b46a8c29fdb6888bebc6fbe SHA-1: acfb9932128fba10010094e1a2f3ff00f2586fef SHA-256: 3cebf6adfae1a291cf151c52629b2775051cfe4a7a52eddf858c500ba1f43885
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a link to a redirector URL, which is a common tactic for delivering malware or phishing pages. The document body, though heavily obfuscated, contains text related to 'Kof 2002 magic plus 2 free download' and the redirector URL, suggesting a lure. The presence of a PDF link farm heuristic indicates a large number of outbound links, likely for SEO poisoning or distributing malicious content. The 'SE_LOLBIN_RUN_COMMAND' heuristic suggests that the document may contain instructions for executing commands, potentially via embedded scripts or by leveraging legitimate system tools.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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/wix?keyword=kof+2002+magic+plus+2+free+download
    • https://cdn.shopify.com/s/files/1/0438/4522/2550/files/61273203742.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/boxapalerefuraliduwib.pdf
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/curl_set_header.pdf
    • https://cdn.shopify.com/s/files/1/0434/4135/6950/files/wuvasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/54473831966.pdf
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/quran_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/puwarebekufa.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/craftsman_yt_3000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/zuguluwekeloxib.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/69597447637.pdf
    • https://cdn.shopify.com/s/files/1/0434/4371/6262/files/wovatolanusugaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/zisulipevamipi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/premiere_pro_templates_nulled.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/tavebuma.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/5283547427.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/historia_de_la_contabilidad_financiera.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/ostrich_farming_manual.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00008aed.bin
dcb65dca9b33012651ada570136d0b30ca1f2b6052b670d161b995fb14d62965		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8AED 21856 bytes
font_00_sfnt_off00004afe.bin
cd1d1f3722292adf60346f1294c15440eb321f6c5a3c8930bf47b324f488a1d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFE 3332 bytes
font_01_sfnt_off000056e4.bin
a33d5a2c1f71c73c5a9e1cc78cbb607e2dfcaae332c9975be80052f5130541ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E4 5612 bytes
font_02_sfnt_off000069ec.bin
3292ca27434386a823cead6bfcc235aded97ce424ad193f53c0d93b4674d8b0a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EC 9560 bytes
font_04_sfnt_off0000b0a0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0A0 4324 bytes

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