Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0dd1318415b7fcd…

MALICIOUS

PDF

62.8 KB Created: 2020-08-10 08:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fbaaab3f470a84249ec66064052d9c0 SHA-1: e577cdc82b55f12b2cd014c39f9742224d72d490 SHA-256: a0dd1318415b7fcdd2139ec33d8fc0adab6b60b8c7052e8e6b59e10a39595c7d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a syllabus, which is a common lure for phishing or malware distribution. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation.

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=bpt+2nd+year+syllabus+pdf
    • http://files.amaysingsvgs.com/uploads/1/3/0/8/130874257/1044387.pdf
    • http://purar.stalbridgelibrary.org/uploads/1/3/1/6/131606758/6706833.pdf
    • http://files.perspectate.com/uploads/1/3/1/0/131070493/502fa.pdf
    • http://files.treathairandbeauty.co.uk/uploads/1/3/2/3/132303238/6441714.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/katofiketibo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/39264815198.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/19547292604.pdf
    • https://cdn.shopify.com/s/files/1/0431/2127/9138/files/bazowuwoxetava.pdf
    • https://cdn.shopify.com/s/files/1/0434/8723/2166/files/53286016660.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3264/files/13650528759.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/67796109981.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8402/files/83057426028.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/pilixubeweregasulevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/jajube.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagesagebog.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
font_00_sfnt_off00007bbe.bin
f1f70744fcb69915345a5ab2046fad5268e8c80a285e01e73913f0343009de92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBE 5460 bytes
font_01_sfnt_off00008e60.bin
c2e3e9774d016a1aafd5c965c49d533237c4529f0757e22401f8dc8f2b090ce0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E60 4432 bytes
font_02_sfnt_off00009e7b.bin
026de1076dad6614fee7b4839f066e743e4238b5ddea94259138cfcd618330b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E7B 2320 bytes
font_03_sfnt_off0000a8cd.bin
da1ea2882a1c638e7ec5eae28027b1e9f2b7ffbc2e55d38db5b85ec01416dd16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8CD 14540 bytes
font_04_sfnt_off0000d5e4.bin
7a7e0f9cb89785dee93ecfbcc78ef93b5a18a5022886c2d5a0bf15d9412c15a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E4 16224 bytes

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