Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4569326820272c0…

MALICIOUS

PDF

77.0 KB Created: 2020-08-12 11:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f161d970503916de3508ece505d6ef7 SHA-1: 81934ee2fcddc12d004ae3fefa9ae8ace033764b SHA-256: d4569326820272c068532e1f64bc7c84086cbe21a78be82460329a2455cbf7e6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'Amanda Knox book pdf' and a URL that appears to be a redirector. This suggests the document is designed to trick users into clicking malicious links, likely for phishing or malware delivery. The presence of numerous external links and a redirector URL strongly indicates a malicious intent.

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.cc/pify?keyword=amanda+knox+book+pdf
    • http://files.highpeaksedteam.org/uploads/1/3/0/8/130813851/a54af28.pdf
    • http://files.slr-ofs.org/uploads/1/3/0/9/130969158/2121317.pdf
    • http://files.tcccmi.com/uploads/1/3/1/4/131438216/xurabe-xixevuxidijo-fuwimudedag-vexobesuxesu.pdf
    • http://jaguwata.primitivenoiseband.com/uploads/1/3/1/3/131379578/pexovu_xixiza_vivenawij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/womonevixaxijebuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0071/files/99842492180.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/87914988823.pdf
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/14171168880.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/post_behavioralism_in_political_science.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/49266054645.pdf
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/42600146942.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/tadapaseruw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/xefujadawomefokaru.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8663/files/basotiwutalanuwafegip.pdf
    • https://cdn.shopify.com/s/files/1/0432/8367/7339/files/xaxufosepagorupadovire.pdf
    • https://cdn.shopify.com/s/files/1/0433/6081/3208/files/dozazafabinorukipab.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_off0000f1e7.bin
0dcf972611e966446fc2c094dfa7baccc0fbcf6c166eb0e38818d09c5c14ce09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E7 5144 bytes
font_01_sfnt_off0001035a.bin
d3e549a82a3399aa71cc7d8785e2ef09deee414f1b305fe615bf541b642c9703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1035A 10476 bytes

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