Malicious PDF — malware analysis report

Static analysis result for SHA-256 80683f23abdc4d06…

MALICIOUS

PDF

42.1 KB Created: 2020-08-23 22:21:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 789bdd0fccab0c1d6e822c908e5ad295 SHA-1: c5d44f28bfe37531e0c58984e8c4d81b0d6ef403 SHA-256: 80683f23abdc4d06edc150713b59bd3724855fcbc333bce16a2b29204c8a8081
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'Queen bed sheet size in cm' and the malicious URL itself, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify, indicating a link farm for SEO manipulation or to host further malicious 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=queen+bed+sheet+size+in+cm
    • http://dusesowa.symphonievents.com/uploads/1/3/1/3/131384169/d16f9756fdff2de.pdf
    • http://tafavisi.inprocess.org/uploads/1/3/1/3/131379021/8e8f4f3c345.pdf
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/binatosojunejezobepar.pdf
    • https://cdn.shopify.com/s/files/1/0429/0828/7132/files/98785967756.pdf
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/80092988852.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/49208867932.pdf
    • https://cdn.shopify.com/s/files/1/0430/3683/5993/files/principles_of_catholic_social_teaching.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/kipuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/niwik.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4967/files/nofotojesozawawusamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7851/5864/files/21121388554.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_off00005ef5.bin
a116b599707f085501a0a8d3ccdcd1a7325cc3cf39f8a14a04636e562c0ac6b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF5 5092 bytes
font_01_sfnt_off00007024.bin
9bd5aed5761b54d4f9c4e09cc1cf6556a328992f0038525747d36a147b0472a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 14220 bytes

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