Malicious PDF — malware analysis report

Static analysis result for SHA-256 e787cf1004f19687…

MALICIOUS

PDF

37.6 KB Created: 2020-08-07 21:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572c28843c96397536a013c89dae786a SHA-1: 98889e976f0c0d2064e73b3a70b897aaa7b2d5ae SHA-256: e787cf1004f1968710360ffa4f4178b79b6abd837043bd76ae5630ea222cd014
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=glencoe+algebra+1+worksheets+pdf', which is flagged as malicious. This suggests the document is designed to trick users into clicking the malicious link, likely leading to further malware download or phishing. 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.ru/pify?keyword=glencoe+algebra+1+worksheets+pdf
    • http://files.hchstheatre.com/uploads/1/3/2/7/132740342/9d004f53.pdf
    • http://files.lincolnheightsbaptistchurch.com/uploads/1/3/2/8/132815220/688155.pdf
    • http://files.kristawiegand.com/uploads/1/3/2/7/132740618/pinakuboz_mizopu_nuwokidupefo.pdf
    • http://files.rohsalgebra2axb.com/uploads/1/3/2/3/132302992/5223656.pdf
    • http://files.sitcon.sk/uploads/1/3/0/7/130776891/mafas.pdf
    • https://cdn.shopify.com/s/files/1/0434/0095/4021/files/nefubufufeluwokufikol.pdf
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/96059651549.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7803/files/2000_kx_250.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0891/files/53469219962.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/ascii_code_for_a_to_z.pdf
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/takalasab.pdf
    • https://cdn.shopify.com/s/files/1/0440/2610/1910/files/90051901460.pdf
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/rojorapo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/wavumiwubirolon.pdf
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/kujuxekesuvado.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/nexizeli.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_off00005216.bin
7010c5ab6db2ba57f674fe2edb847fa752d2d4fcd447216af9993bcf06d28292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5216 5796 bytes
font_01_sfnt_off000065e4.bin
b0590c98ddb3e2217a81005eb30231114e7b6d45c9b71c6fcb393d9ccef125ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E4 10428 bytes

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