Malicious PDF — malware analysis report

Static analysis result for SHA-256 916693f5cdf6eea4…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 11:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 063279eda691e69aaf68461a9388b8a8 SHA-1: e577791c8500f6697a40847db5ed68b12d0d9b1c SHA-256: 916693f5cdf6eea493ab2766624654a91145270238923b0e6fbeaced1b9d38d0
150 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but the primary URL redirects to a malicious site. The document body itself is heavily obfuscated but contains the malicious redirector URL. This indicates a phishing or redirection attempt, likely to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=managerial+economics+theory+applications+and+cases+pdf
    • https://cdn.shopify.com/s/files/1/0429/3964/6108/files/zolagofepebup.pdf
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/85288434972.pdf
    • https://cdn.shopify.com/s/files/1/0440/9566/8376/files/calibre_lvs_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/bomuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/0016/8607/files/96903592895.pdf
    • https://cdn.shopify.com/s/files/1/0457/7689/6156/files/nivikitedo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8251/3570/files/ashanti_only_you.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/12908742445.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7013/files/aircraft_equations_of_motion.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1846/files/pandoc_html_to_page_break.pdf
    • https://cdn.shopify.com/s/files/1/0439/4690/1672/files/40361635458.pdf
    • https://cdn.shopify.com/s/files/1/0437/3315/6001/files/sumber_filsafat_pendidikan_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/36726711640.pdf
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/4621014329.pdf
    • https://cdn.shopify.com/s/files/1/0431/4647/7725/files/vaxanopesutuponexegot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006039.bin
8f1f24e7c20f5449de395a0dff9da416698b78f482650a7a110c11dda22f6f88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 5464 bytes
font_01_sfnt_off0000729f.bin
680c2bee0507531b7f0c505184db5b04be918d2a6bb45ffd5cc3b65317194d9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729F 10108 bytes
font_02_sfnt_off00009502.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9502 4324 bytes

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