Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e51b8609b8db0c0…

MALICIOUS

PDF

51.4 KB Created: 2020-08-25 01:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4687a1bfeca621af537bb68904b95fd4 SHA-1: 06d5d8889b325d41ecb69ad93ca1dbb3f60b6522 SHA-256: 8e51b8609b8db0c05c453db29bae53ed80f9f0103b823fe93f55776e2f033534
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, specifically pointing to 'https://ttraff.cc/pify?keyword=corporate+engagement+strategy+template'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into visiting a malicious site. The file also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO manipulation or to obscure the true destination. 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/pify?keyword=corporate+engagement+strategy+template
    • http://nimewi.peachtreetally.net/uploads/1/3/0/8/130813834/2002708.pdf
    • http://files.dsdominion.org/uploads/1/3/1/6/131606222/kiginola-ziroguwamovo.pdf
    • http://files.oldetownemusic.com/uploads/1/3/1/0/131070674/3766279.pdf
    • http://givexoliw.thestudentphysicaltherapist.com/uploads/1/3/0/7/130738914/4040007.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/ledarelepiwex.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/oxford_dictionary_english_to_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/wordly_wise_3000_book_8_answer_key_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/1139/8041/files/farulalolojumu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/36114515082.pdf
    • https://cdn.shopify.com/s/files/1/0464/5568/5288/files/adidas_platform_stan_smith.pdf
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/bofekizunetazaru.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/talejefor.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/gazogoduzojawezero.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/16653422235.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_off00008bed.bin
0a92c6f6a24124b8bc7352023f360a6aeeb30d0cfc761ad4ea3144a34a096d0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BED 5144 bytes
font_01_sfnt_off00009d5d.bin
92093613307c543807366f74853a7d50f9e5b3c8fb2b46a9184f3d53568a1e87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D5D 10352 bytes

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