Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bbcfdb47ad45a37…

MALICIOUS

PDF

65.8 KB Created: 2020-08-10 06:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a1e963ee687f0b2479087bf982d07c1 SHA-1: 3ad907a4775a9196d26453db9b53f26243e81899 SHA-256: 4bbcfdb47ad45a37a028e831d5ec9b2b719807fe4bf5d5cfff7684a67a1e688f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=cadences+piano+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The primary intent appears to be redirecting the user to malicious infrastructure.

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=cadences+piano+pdf
    • http://files.equill.de/uploads/1/3/2/6/132695530/680380.pdf
    • http://files.thesummitcommunitychurch.com/uploads/1/3/1/8/131871648/1158365.pdf
    • http://xevavo.dunhamlit.com/uploads/1/3/0/9/130969723/laxebalani-bikozarile.pdf
    • https://cdn.shopify.com/s/files/1/0438/9113/0536/files/59431669547.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/96904559459.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/mebisoresu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/zenawizikakix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/larson_college_algebra_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/51495566365.pdf
    • https://cdn.shopify.com/s/files/1/0446/7815/2345/files/javascript_load_json_from_file.pdf
    • https://cdn.shopify.com/s/files/1/0436/3311/5289/files/dekaluvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/nordictrack_audiostrider_990_manual.pdf
    • https://cdn.shopify.com/s/files/1/0449/8876/0232/files/6821625840.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/35733386319.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009fe8.bin
d2ad526118b22602a6fe8aacec0cc5f264c64cebd0376408dece61fab3598d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE8 4752 bytes
font_01_sfnt_off0000b01e.bin
2706945d7ba2beb0a3e794f241401f62d3ce9ecbbe84b7a47419e74bf25b1f9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB01E 11420 bytes
font_02_sfnt_off0000d6ac.bin
b2f1af8d3c6c584ad6ab612038e42d95c20c66029f3ae806de29efdd7ffc45f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AC 16200 bytes
font_03_sfnt_off0000ebf4.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF4 4324 bytes

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