Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c8e8eb18fbe9f5…

MALICIOUS

PDF

64.3 KB Created: 2020-08-10 00:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81304809ffa3efffacc97dcd5815c09f SHA-1: 584d747a4d8aa4a0138a91bdfd930ae061ffb824 SHA-256: a8c8e8eb18fbe9f5622cd38437165ad9f06dd9f2c5137e3ce842bc04db443de4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL that appears to be part of a link farm. The document body, though heavily obfuscated, contains a reference to 'haloperidol injetavel bula pdf' and the malicious URL. The presence of a link farm suggests an attempt to distribute malicious content or phish for credentials through a series of redirects.

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=haloperidol+injetavel+bula+pdf
    • http://zupewan.kauffmanfraser.com/uploads/1/3/1/8/131858661/1df9147f4750e.pdf
    • http://files.naacpmaryland.org/uploads/1/3/0/7/130776712/fesorivaduz.pdf
    • http://files.williamblakefilmmaker.com/uploads/1/3/1/6/131606454/2472461.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/sabitulobamusakur.pdf
    • https://cdn.shopify.com/s/files/1/0431/2354/0124/files/gikivixulixoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/1395/6006/files/60392708779.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/mutujifozodowudabore.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/clifford_the_big_red_dog_story.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tanedikefiresemur.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/56313013059.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/51821244374.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/91079742095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/24330190259.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_off0000bbc7.bin
b95050e944b9ddd11296ed0058e2cc75048342b9ff0add563e19249dcc426187		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBC7 5092 bytes
font_01_sfnt_off0000cd29.bin
87667783101b0f8af89af55f9a224a2f027ca74091a2e75bf2bebc6491e83f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD29 11476 bytes

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