Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f63bc47cc2e3c3…

MALICIOUS

PDF

47.7 KB Created: 2020-08-01 21:06:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a5faeab381511f6bfeb2d3cb40b5975 SHA-1: ba16a48009a2321c226cde471e1f26f30f2fe2f1 SHA-256: 57f63bc47cc2e3c358ed3f62c6cc2e205aa773a108728b36c0c91ba1e66aa2ed
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=purdue+housing+portal'. This URL is presented within the document body, disguised as a Purdue housing portal login. The file also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The primary malicious URL is designed to redirect users to potentially harmful content.

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=purdue+housing+portal
    • http://files.sukujewelry.com/uploads/1/3/2/6/132680827/d59747b.pdf
    • http://files.holzlawnandlandscape.com/uploads/1/3/1/3/131380485/tukewasoputete-junigaxifav-wuseji.pdf
    • http://files.myartscreations.com/uploads/1/3/1/4/131437484/vulupozotaxoxem_sifofavobojozav.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/lagobebewaborovivoku.pdf
    • https://cdn.shopify.com/s/files/1/0438/0216/5410/files/can_t_hold_us_clean.pdf
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/belefipowogixomonaluso.pdf
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/revixixoxugonide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/double_list_login.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69865881622.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/manawikuwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/6243/3694/files/99853546597.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/fagegaxapezinabom.pdf
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/43628354113.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/rupiwodamejovakulapog.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jaled.pdf
    • https://cdn.shopify.com/s/files/1/0429/2549/0332/files/88740669076.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_off00007afc.bin
0c9b3bf66aec5a9e3e1fbcb0b7d7aadbb543a419cfae9fdebef9ba807d9c2d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFC 5224 bytes
font_01_sfnt_off00008cb8.bin
2f0c08216e10830012d808c67f483792d4af7a29527493a244d702f0d1b33646		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB8 10860 bytes

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