Malicious PDF — malware analysis report

Static analysis result for SHA-256 866d418454db846c…

MALICIOUS

PDF

34.7 KB Created: 2020-07-31 21:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42765157565adc8040270aae00e9503d SHA-1: 3457044523150f3a537f1aff4bbd1392486b6860 SHA-256: 866d418454db846c843fc2b7224fd46c6a522ea234dc37bd3690548a239a49f6
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Oldsmobile cutlass repair manual pdf' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a coordinated effort to distribute 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.ru/pify?keyword=oldsmobile+cutlass+repair+manual+pdf
    • http://files.capitolsteamandclean.com/uploads/1/3/1/4/131454190/vozidupaded.pdf
    • http://files.last-hope-tm.info/uploads/1/3/0/8/130813364/8539ff4a.pdf
    • http://files.jadetempletao.org/uploads/1/3/1/4/131438202/6274821.pdf
    • http://files.lighthousechurchathensny.net/uploads/1/3/2/8/132816036/xuwesizupifex-gegawin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/8306540533.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/85091318423.pdf
    • https://cdn.shopify.com/s/files/1/0431/6872/7194/files/pogovalanorib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/larilu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1047/4663/files/59400904777.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/nesagetose.pdf
    • https://cdn.shopify.com/s/files/1/0433/0510/7620/files/fabalipovirezowakejog.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6891/files/99013552357.pdf
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/80742873440.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_off00004930.bin
0b96819bcd4166262e6a68f042ed048e8fd91f1611a87421ca0fb74baf410aa9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4930 5468 bytes
font_01_sfnt_off00005ba5.bin
e571da2ff958008bb84685398fcd6979033494631f40c4a05bcb3c5860fdc141		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA5 10016 bytes

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