Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe792390614562d7…

MALICIOUS

PDF

44.0 KB Created: 2020-08-17 16:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46265fae9953ab70ea5b0eb57f13f04b SHA-1: 26cc1a4632a5612c8a12dc8de0056eaa6d1d165e SHA-256: fe792390614562d70eabada06197075e306899709b36108b91f22d0451fac543
120 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads or phishing pages. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for a prior authorization form. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the malicious nature of the redirector.

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=accredo+prior+authorization+form+for+humira
    • http://files.southavenue.org/uploads/1/3/1/0/131070171/3298004.pdf
    • http://files.rvaskins.org/uploads/1/3/1/6/131606335/karez_pujijugobevofit.pdf
    • https://cdn.shopify.com/s/files/1/0430/1524/1891/files/bose_soundsport_android_headphones.pdf
    • https://cdn.shopify.com/s/files/1/0435/9821/7374/files/continuing_professional_development_template_for_nurses.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/58406102447.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/39081743097.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/full_bodybuilding_program.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9647/files/96425185684.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7847/files/cholesterol_synthesis_steps.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/nitafuzigopuzuwubisegov.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_off0000614b.bin
0666c6f757d6cf980ada3e79e6f206e05ce9769162f7d59cf15ec43634147cab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x614B 5224 bytes
font_01_sfnt_off000072e7.bin
c691f08412e5482f3d0791d6a84b4d9d9054bb6787b06894b4e79c35b50a4ad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E7 14616 bytes

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