Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea991bda87259008…

MALICIOUS

PDF

44.3 KB Created: 2020-08-11 21:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 650be0537ae322343c48f74d4a61ab2b SHA-1: ddccb8e45f2f8c9708c0e19b13aeb6759f349a6d SHA-256: ea991bda872590085b44f9a20671db50ac2f0364edc9b1501ee57ef42bd58b65
120 Risk Score

Malware Insights

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

The PDF file contains a link farm, with multiple embedded URLs pointing to various PDF files. One of these URLs, https://ttraff.cc/wb?keyword=undang-undang%20no.%208%20tahun%201999%20tentang%20perlindungan%20konsumen%20pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this malicious URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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/wb?keyword=undang-undang%20no.%208%20tahun%201999%20tentang%20perlindungan%20konsumen%20pdf
    • http://files.visualshopsd.com/uploads/1/3/1/4/131437689/morigitopop.pdf
    • http://fonoxel.hawkhillcustom.com/uploads/1/3/1/4/131407818/6363243.pdf
    • http://files.arizonalife.rocks/uploads/1/3/2/6/132681450/xufajabal_sapadu_durewalek_rulozepewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5509/5712/files/88200372464.pdf
    • https://cdn.shopify.com/s/files/1/0439/7580/3038/files/acoperamantul_maicii_domnului.pdf
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/83045101046.pdf
    • https://cdn.shopify.com/s/files/1/0432/7001/3086/files/wopuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/rulonisunomilaregusamewux.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/33538042998.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdf
    • https://cdn.shopify.com/s/files/1/0438/8945/9368/files/breeding_rabbits.pdf
    • https://cdn.shopify.com/s/files/1/0432/4448/6824/files/58755109555.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_off00006fc7.bin
9f7d348c73a3a5ff0df0eb2bb701a67bb1a85132c5b3e63b14bcf7519f194940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC7 5976 bytes
font_01_sfnt_off00008406.bin
575eec05991faf3838d22d49b8b4700f73cf1fecd884ff731c4d037d5338bd19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8406 9348 bytes

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